twee Study explores link between farm machinery vibration and workers’ back pain By www.safetyandhealthmagazine.com Published On :: Thu, 21 Mar 2019 00:00:00 -0400 Iowa City, IA — A NIOSH-funded study of farm machinery found that the machine operators experienced whole-body vibration at levels that reached the European Union’s “action level” for exposure limit within two hours of operation on nearly 30 percent of the equipment tested. Full Article
twee R&D: Between the Lines By www.preparedfoods.com Published On :: Fri, 12 Feb 2021 06:00:00 -0500 To better help its readers with initial new product evaluation and development Prepared Foods asked Nancy Jo Seaton, owner and president of Seaton Food Consultants, to create a thought leadership series. Full Article
twee How to Differentiate Between Caulking and Sealant for Tile Installations By www.floortrendsmag.com Published On :: Fri, 03 Nov 2023 09:00:00 -0400 Scott Carothers, academic director for the Ceramic Tile Education Foundation, explains when to use grout, caulking or sealants for your tile installations. Full Article
twee Trapped Mobility: a theoretical framework and literature review focusing on displaced youth at the borders between the Global South and Global North. By ezproxy.scu.edu.au Published On :: Tue, 01 Feb 2022 00:00:00 -0500 Children's Geographies; 02/01/2022(AN 154441555); ISSN: 14733285Academic Search Premier Full Article LITERATURE reviews INVOLUNTARY relocation DEVELOPING countries
twee Reconceptualizing family reunification from a youth mobilities perspective: transnational youth between Ghana and Belgium. By ezproxy.scu.edu.au Published On :: Fri, 01 Apr 2022 00:00:00 -0400 Children's Geographies; 04/01/2022(AN 155952641); ISSN: 14733285Academic Search Premier Full Article GHANA BELGIUM FAMILY reunification YOUNG adults NUCLEAR families FAMILY research DIASPORA DEVELOPING countries
twee Relationships with opposite-gender peers: the 'fine line' between an acceptable and unacceptable 'liking' amongst children in a Chinese rural primary school. By ezproxy.scu.edu.au Published On :: Sat, 01 Oct 2022 00:00:00 -0400 Children's Geographies; 10/01/2022(AN 159948782); ISSN: 14733285Academic Search Premier Full Article CHINA CHINESE people PRIMARY schools RURAL children RURAL schools TEACHER attitudes SCHOOL children SCHOOLGIRLS
twee The relationship between young children's transitions and power: 'Why are all the doors locked? I don't feel free ... I am not in charge of me anymore'. By ezproxy.scu.edu.au Published On :: Sat, 01 Oct 2022 00:00:00 -0400 Children's Geographies; 10/01/2022(AN 159948778); ISSN: 14733285Academic Search Premier Full Article INSTITUTIONAL care of children PARTICIPANT observation SOCIAL reality PRIMARY schools PUBLIC spaces
twee Outdoor activities and contact with nature in the Portuguese context: a comparative study between children's and their parents' experiences. By ezproxy.scu.edu.au Published On :: Wed, 01 Feb 2023 00:00:00 -0500 Children's Geographies; 02/01/2023(AN 163249011); ISSN: 14733285Academic Search Premier Full Article LISBON (Portugal) OUTDOOR recreation FOSSIL trees TREE climbing PARENTS ROCK climbing
twee Not-Quite-Friendship: exploring social relations between child domestic workers and the children of employing families. By ezproxy.scu.edu.au Published On :: Sat, 01 Apr 2023 00:00:00 -0400 Children's Geographies; 04/01/2023(AN 163915537); ISSN: 14733285Academic Search Premier Full Article TANZANIA MWANZA (Tanzania) HOUSEHOLD employees HOUSEKEEPING FAMILIES COMMUNITIES FAMILY relations
twee Between the state, capital, and families: the production of children's space in urban China. By ezproxy.scu.edu.au Published On :: Sat, 01 Apr 2023 00:00:00 -0400 Children's Geographies; 04/01/2023(AN 163915535); ISSN: 14733285Academic Search Premier Full Article CHINA SHANGHAI (China) PUBLIC spaces FAMILIES CITIES & towns EDUCATIONAL change SOCIOECONOMIC status
twee Environmental learning across generations: spontaneous encounters and interactions between young children, mothers and teachers. By ezproxy.scu.edu.au Published On :: Sun, 01 Oct 2023 00:00:00 -0400 Children's Geographies; 10/01/2023(AN 173035628); ISSN: 14733285Academic Search Premier Full Article MALTA EARLY childhood education SCHOOL children MOTHERS TEACHERS OBSERVATION (Educational method) FAMILY relations
twee The relationship between children's third-place play, parental neighbourhood perceptions, and children's physical activity and sedentary behaviour. By ezproxy.scu.edu.au Published On :: Sun, 01 Oct 2023 00:00:00 -0400 Children's Geographies; 10/01/2023(AN 173035613); ISSN: 14733285Academic Search Premier Full Article AUCKLAND (N.Z.) SEDENTARY behavior PARENT attitudes PHYSICAL activity GEOGRAPHIC information systems NEIGHBORHOODS
twee The 'messy' online classroom during COVID-19: students opening up a liminal space between being controlled and exercising agency. By ezproxy.scu.edu.au Published On :: Mon, 01 Apr 2024 00:00:00 -0400 Children's Geographies; 04/01/2024(AN 178088139); ISSN: 14733285Academic Search Premier Full Article SEOUL (Korea) COVID-19 pandemic CHILD actors ONLINE education BILEVEL programming SEMI-structured interviews PARTICIPANT observation VIRTUAL classrooms
twee "Out and about": relationships between children's independent mobility and mental health in a national longitudinal study. By ezproxy.scu.edu.au Published On :: Fri, 30 Aug 2024 00:00:00 -0400 Children's Geographies; 08/30/2024(AN 179318554); ISSN: 14733285Academic Search Premier Full Article INSTITUTIONAL care of children GENERALIZED estimating equations MENTAL illness FREEDOM of movement INCOME
twee Digital geographies of home: parenting practices in the space between gaming and gambling. By ezproxy.scu.edu.au Published On :: Tue, 01 Oct 2024 00:00:00 -0400 Children's Geographies; 10/01/2024(AN 180134755); ISSN: 14733285Academic Search Premier Full Article GAMBLING YOUNG adults DOMESTIC space DIGITAL currency GEOGRAPHERS
twee The association between neighborhood socioeconomic deprivation and mental health in low- and middle-income countries: A scoping review By ifp.nyu.edu Published On :: Fri, 01 Nov 2024 03:42:01 +0000 International Journal of Social Psychiatry, Ahead of Print. Background:Environmental research on mental health primarily originates from high-income countries, while information about the rest of the world remains limited.Aims:This study examined: (1) the available published research evidence regarding the association between neighborhood-level deprivation and indicators of mental health and illness in low- and middle-income countries (LMICs), […] The post The association between neighborhood socioeconomic deprivation and mental health in low- and middle-income countries: A scoping review was curated by information for practice. Full Article Meta-analyses - Systematic Reviews
twee Improving Financial Stability for Renters through Partnerships Between Local Housing and Financial Empowerment Service Providers By ifp.nyu.edu Published On :: Sun, 03 Nov 2024 03:31:42 +0000 The post Improving Financial Stability for Renters through Partnerships Between Local Housing and Financial Empowerment Service Providers was curated by information for practice. Full Article Grey Literature
twee Notice of Special Interest (NOSI): Analysis of Existing Linked Datasets to Understand the Relationship between Housing Program Participation and Risk for Chronic Diseases and Other Conditions (R01-Clinical Trial Not Allowed) [First Available Due Date: Oct By ifp.nyu.edu Published On :: Sun, 20 Oct 2024 13:49:22 +0000 The post Notice of Special Interest (NOSI): Analysis of Existing Linked Datasets to Understand the Relationship between Housing Program Participation and Risk for Chronic Diseases and Other Conditions (R01-Clinical Trial Not Allowed) [First Available Due Date: Oct 07] was curated by information for practice. Full Article Funding
twee Notice of Special Interest (NOSI): Analysis of Existing Linked Datasets to Understand the Relationship between Housing Program Participation and Risk for Chronic Diseases and Other Conditions (R01-Clinical Trial Not Allowed) By ifp.nyu.edu Published On :: Fri, 01 Nov 2024 03:23:01 +0000 The post Notice of Special Interest (NOSI): Analysis of Existing Linked Datasets to Understand the Relationship between Housing Program Participation and Risk for Chronic Diseases and Other Conditions (R01-Clinical Trial Not Allowed) was curated by information for practice. Full Article Funding
twee Affiliation to the Alcoholics Anonymous (AA) community: A qualitative study on differences between highly affiliated and low/non-affiliated individuals By ifp.nyu.edu Published On :: Sat, 02 Nov 2024 19:59:19 +0000 Nordic Studies on Alcohol and Drugs, Ahead of Print. Aim: The aim of this study was to identify and elucidate the differences between highly affiliated and low/non-affiliated participants in Alcoholics Anonymous (AA) meetings. Methods: A qualitative study of 24 participants was conducted in Romania between March and June 2021. Data were collected by means of […] The post Affiliation to the Alcoholics Anonymous (AA) community: A qualitative study on differences between highly affiliated and low/non-affiliated individuals was curated by information for practice. Full Article Open Access Journal Articles
twee Examining the reciprocal associations between symptoms of depression and anxiety and contact with the criminal justice system By ifp.nyu.edu Published On :: Tue, 05 Nov 2024 11:02:11 +0000 Abstract Background Taken together, prior publications on the association between symptoms of depression and anxiety and contact with the criminal justice system (CJS) suggest a bi-directional relationship, but all the studies only focus on one direction in this relationship. Aims To examine, in longitudinally collected data, period-specific within-individual change in anxiety and depression measures preceding […] The post Examining the reciprocal associations between symptoms of depression and anxiety and contact with the criminal justice system was curated by information for practice. Full Article Journal Article Abstracts
twee A 'cosmic connection' between two violinists By minnesota.publicradio.orghttps Published On :: Sun, 28 Oct 2018 15:00:00 -0500 For decades, Cologne-based violinist Geoffry Wharton has played jazzy crowd-pleasing encores written in the 1930s by an obscure composer, Audrey Call. Then Wharton discovered a spooky connection with her. Full Article
twee 9 contrasts between His Kingdom and Christian nationalism By www.christianpost.com Published On :: Sun, 29 Sep 2024 07:55:15 -0400 There has been much talk and concern regarding so-called Christian Nationalism in the past several years. Full Article
twee Gamaleya Center virologist: There is no link between cancer and vaccination By english.pravda.ru Published On :: Wed, 14 Jul 2021 20:17:00 +0300 LDPR leader Vladimir Zhirinovsky managed to get revaccinated. For the first time, the politician chose Sputnik V; for the repeated procedure, he opted for CoviVac. As Zhirinovsky explained, "the level of antibodies is gradually decreasing, I wanted to strengthen the defense of my body." Mass vaccination against coronavirus, which is now taking place in all countries, including Russia, still raises a huge number of questions. This is not surprising, given the fact that the coronavirus infection with which we are dealing has not been thoroughly studied yet, and the vaccines for it have not gone through all the required stages of clinical trials. Pravda.R asked most burning questions related to the topic of vaccination to Professor of Virology, Chief Researcher at the Gamaleya Research Center for Epidemiology and Microbiology Anatoly Alshtein. Full Article Health
twee Elder Jonah of Odessa predicted war between Russia and the West By english.pravda.ru Published On :: Mon, 06 May 2024 21:16:00 +0300 The third Easter that the Orthodox world celebrated on May 5, 2024, is believed to be a victorious one for Russia, Elder Jonah of Odessa predicted. Victorious Easter in 2024 Elder Jonah of Odessa, the confessor of the Holy Dormition Monastery, who died in 2012 at the age of 87, warned long before the coup in Kyiv about the war that would erupt between a "small state” and Russia. The war, he predicted, would sow "chaos” in the world and spread "spiritual sprite” around Ukraine: "Ukraine and Russia do not exist separately — there is one Holy Rus'. Our enemies decided to divide us in order to destroy Orthodoxy in Little Rus'. God will not let that happen.” Full Article Society
twee Exploring differences between bankruptcy in Russia vs. USA By english.pravda.ru Published On :: Wed, 28 Oct 2020 14:29:00 +0300 Bankruptcy isn't a topic that anyone likes to discuss. Creditors, debtors, and government officials all get a little queasy at the thought of bankruptcy, but it exists for a reason. And in many situations, it can provide relief when financial friction is heightened. But bankruptcy isn't the same in every country. Laws, rules, and stigmas differ rather significantly - particularly between Russia and the United States. The what and why of bankruptcy Bankruptcy is one of the primary methods by which control over an asset can be transferred to more capable or efficient owners in the instance of market economies. Ultimately, bankruptcy serves three distinct purposes: To solve collective action problems among creditors as they deal with insolvent debtors. To give individual debtors a chance at a "fresh start" when they're overburdened by debt. To preserve/save the financial distress firms have by reorganizing rather than liquidating. Bankruptcy is basically government-sanctioned relief that allows individuals or businesses to have debts forgiven, granted they meet specific criteria and follow certain guidelines. It plays an important role in keeping the larger economic engine hitting on all cylinders. Without bankruptcy, millions of citizens would find themselves impoverished and unable to financially recover from dire situations. Full Article Business
twee Hot war between Iran and Israel postponed, but for how long? By english.pravda.ru Published On :: Mon, 15 Apr 2024 17:33:00 +0300 The conflict between Iran and Israel did not reach a heated stage this timeб but the parties tested their level of readiness for full-fledged war. Russia could benefit from the conflict in the Middle East, but not in the long term. The market reacted weakly to Iran's attack on Israel on Sunday, April 14. Gold and oil prices showed almost no reaction. The price of gold rose by 0.8 percent to $2,379 per troy ounce, according to trading data on Monday, April 15. At the same time, Brent is trading steadily at $90.4 per barrel, WTI — at $85.6. The conflict appears to have been frozen for a short time unless Israel responds to Iran within a week. The situation is expected to aggravate, but not now — the parties have tested their combat readiness, but preferred not to go full throttle yet. Full Article Incidents
twee Study reveals connection between estrogen levels and a risk of dementia By english.pravda.ru Published On :: Thu, 07 Apr 2022 14:41:00 +0300 A research group from the George Institute for Global Health in Australia found out that the estrogen levels can be an indicator of a woman's risk of developing dementia. The researchers suggest that some of the reproductive factors (early or late menstruation, early menopause) are a sign of a higher risk of certain neurological problems connected with cognitive and social skills. According to the PloS Medicine journal, pregnancy and abortion are connected with the lower risk of dementia and other neurological problems. Full Article Health
twee When There's No One Else to Blame: The Impact of Coworkers' Perceived Competence and Warmth on the Relations between Ostracism, Shame, and Ingratiation By www.newswise.com Published On :: Wed, 13 Nov 2024 06:25:19 EST Full Article
twee Top Office Working to Arrange Meeting between Yoon and Trump By world.kbs.co.kr Published On :: Tue, 12 Nov 2024 15:31:29 +0900 [Politics] : The presidential office says it is working to arrange a meeting between President Yoon Suk Yeol and U.S. President-elect Donald Trump. A senior official told reporters on Tuesday that the top office is in close communication with Trump’s team. This comes as the Yoon administration is preparing for the ...[more...] Full Article Politics
twee What's the Difference Between Liquor and Liqueur? By recipes.howstuffworks.com Published On :: Tue, 20 Feb 2024 18:42:02 -0500 Liquor and liqueur are spelled so similarly, it's easy to confuse them for being the same. But they're not. So how are they different? Full Article
twee Relationship between synthesis method–crystal structure–melting properties in cocrystals: the case of caffeine–citric acid By journals.iucr.org Published On :: 2024-05-07 The influence of the crystal synthesis method on the crystallographic structure of caffeine–citric acid cocrystals was analyzed thanks to the synthesis of a new polymorphic form of the cocrystal. In order to compare the new form to the already known forms, the crystal structure of the new cocrystal (C8H10N4O2·C6H8O7) was solved by powder X-ray diffraction thanks to synchrotron experiments. The structure determination was performed using `GALLOP', a recently developed hybrid approach based on a local optimization with a particle swarm optimizer, particularly powerful when applied to the structure resolution of materials of pharmaceutical interest, compared to classical Monte-Carlo simulated annealing. The final structure was obtained through Rietveld refinement, and first-principles density functional theory (DFT) calculations were used to locate the H atoms. The symmetry is triclinic with the space group Poverline{1} and contains one molecule of caffeine and one molecule of citric acid per asymmetric unit. The crystallographic structure of this cocrystal involves different hydrogen-bond associations compared to the already known structures. The analysis of these hydrogen bonds indicates that the cocrystal obtained here is less stable than the cocrystals already identified in the literature. This analysis is confirmed by the determination of the melting point of this cocrystal, which is lower than that of the previously known cocrystals. Full Article text
twee Multivalent hydrogen-bonded architectures directed by self-complementarity between [Cu(2,2'-biimidazole)] and malonate building blocks By journals.iucr.org Published On :: 2024-08-19 The synthesis and structural characterization of four novel supramolecular hydrogen-bonded arrangements based on self-assembly from molecular `[Cu(2,2'-biimidazole)]' modules and malonate anions are presented, namely, tetrakis(2,2'-biimidazole)di-μ-chlorido-dimalonatotricopper(II) pentahydrate, [Cu3(C3H2O4)2Cl2(C6H6N4)4]·5H2O or [Cu(H2biim)2(μ-Cl)Cu0.5(mal)]2·5H2O, aqua(2,2'-biimidazole)malonatocopper(II) dihydrate, [Cu(C3H2O4)(C6H6N4)(H2O)]·2H2O or [Cu(H2biim)(mal)(H2O)]·2H2O, bis[aquabis(2,2'-biimidazole)copper(II)] dimalonatodiperchloratocopper(II) 2.2-hydrate, [Cu(C6H6N4)2(H2O)]2[Cu(C3H2O4)(ClO4)2]·2.2H2O or [Cu(H2biim)2(H2O)]2[Cu(mal)2(ClO4)2]·2.2H2O, and bis(2,2'-biimidazole)copper(II) bis[bis(2,2'-biimidazole)(2-carboxyacetato)malonatocopper(II)] tridecahydrate, [Cu(C6H6N4)2][Cu(C3H2O4)(C3H3O4)(C6H6N4)2]·13H2O or [Cu(H2biim)2][Cu(H2biim)2(Hmal)(mal)]2·13H2O. These assemblies are characterized by self-complementary donor–acceptor molecular interactions, demonstrating a recurrent and distinctive pattern of hydrogen-bonding preferences among the carboxylate, carboxylic acid and N—H groups of the coordinated 2,2'-biimidazole and malonate ligands. Additionally, coordination of the carboxylate group with the metallic centre helps sustain remarkable supramolecular assemblies, such as layers, helices, double helix columns or 3D channeled architectures, including mixed-metal complexes, into a single structure. Full Article text
twee Crystallographic fragment-binding studies of the Mycobacterium tuberculosis trifunctional enzyme suggest binding pockets for the tails of the acyl-CoA substrates at its active sites and a potential substrate-channeling path between them By journals.iucr.org Published On :: 2024-07-16 The Mycobacterium tuberculosis trifunctional enzyme (MtTFE) is an α2β2 tetrameric enzyme in which the α-chain harbors the 2E-enoyl-CoA hydratase (ECH) and 3S-hydroxyacyl-CoA dehydrogenase (HAD) active sites, and the β-chain provides the 3-ketoacyl-CoA thiolase (KAT) active site. Linear, medium-chain and long-chain 2E-enoyl-CoA molecules are the preferred substrates of MtTFE. Previous crystallographic binding and modeling studies identified binding sites for the acyl-CoA substrates at the three active sites, as well as the NAD binding pocket at the HAD active site. These studies also identified three additional CoA binding sites on the surface of MtTFE that are different from the active sites. It has been proposed that one of these additional sites could be of functional relevance for the substrate channeling (by surface crawling) of reaction intermediates between the three active sites. Here, 226 fragments were screened in a crystallographic fragment-binding study of MtTFE crystals, resulting in the structures of 16 MtTFE–fragment complexes. Analysis of the 121 fragment-binding events shows that the ECH active site is the `binding hotspot' for the tested fragments, with 41 binding events. The mode of binding of the fragments bound at the active sites provides additional insight into how the long-chain acyl moiety of the substrates can be accommodated at their proposed binding pockets. In addition, the 20 fragment-binding events between the active sites identify potential transient binding sites of reaction intermediates relevant to the possible channeling of substrates between these active sites. These results provide a basis for further studies to understand the functional relevance of the latter binding sites and to identify substrates for which channeling is crucial. Full Article text
twee Structure of MltG from Mycobacterium abscessus reveals structural plasticity between composed domains By journals.iucr.org Published On :: 2024-11-01 MltG, a membrane-bound lytic transglycosylase, has roles in terminating glycan polymerization in peptidoglycan and incorporating glycan chains into the cell wall, making it significant in bacterial cell-wall biosynthesis and remodeling. This study provides the first reported MltG structure from Mycobacterium abscessus (maMltG), a superbug that has high antibiotic resistance. Our structural and biochemical analyses revealed that MltG has a flexible peptidoglycan-binding domain and exists as a monomer in solution. Further, the putative active site of maMltG was disclosed using structural analysis and sequence comparison. Overall, this study contributes to our understanding of the transglycosylation reaction of the MltG family, aiding the design of next-generation antibiotics targeting M. abscessus. Full Article text
twee Synthesis and crystal structures of two related Co and Mn complexes: a celebration of collaboration between the universities of Dakar and Southampton By journals.iucr.org Published On :: 2023-11-16 We report the synthesis and structures of two transition-metal complexes involving 2-(2-hydroxyphenyl)benzimidazole (2hpbi – a ligand of interest for its photoluminescent applications), with cobalt, namely, bis[μ-2-(1H-1,3-benzodiazol-2-yl)phenolato]bis[ethanol(thiocyanato)cobalt(II)], [Co2(C13H9N2O)2(NCS)2(C2H6O)2], (1), and manganese, namely, bis[μ-2-(1H-1,3-benzodiazol-2-yl)phenolato]bis{[2-(1H-1,3-benzodiazol-2-yl)phenolato](thiocyanato)manganese(III)} dihydrate, [Mn2(C13H9N2O)4(NCS)2]·2H2O, (2). These structures are two recent examples of a fruitful collaboration between researchers at the Laboratoire de Chimie de Coordination Organique/Organic Coordination Chemistry Laboratory (LCCO), University of Dakar, Senegal and the National Crystallography Service (NCS), School of Chemistry, University Southampton, UK. This productive partnership was forged through meeting at Pan-African Conferences on Crystallography and quickly grew as the plans for the AfCA (African Crystallographic Association) developed. This article therefore also showcases this productive partnership, in celebration of the IUCr's 75 year anniversary and the recent inclusion of AfCA as a Regional Associate of the IUCr. Full Article text
twee JUAMI, the joint undertaking for an African materials institute: building materials science research collaborations and capabilities between continents By journals.iucr.org Published On :: 2024-01-26 JUAMI, the joint undertaking for an African materials institute, is a project to build collaborations and materials research capabilities between PhD researchers in Africa, the United States, and the world. Focusing on research-active universities in the East African countries of Kenya, Ethiopia, Tanzania and Uganda, the effort has run a series of schools focused on materials for sustainable energy and materials for sustainable development. These bring together early-career researchers from Africa, the US, and beyond, for two weeks in a close-knit environment. The program includes lectures on cutting-edge research from internationally renowned speakers, highly interactive tutorial lectures on the science behind the research, also from internationally known researchers, and hands-on practicals and team-building exercises that culminate in group proposals from self-formed student teams. The schools have benefited more than 300 early-career students and led to proposals that have received funding and have led to research collaborations and educational non-profits. JUAMI continues and has an ongoing community of alumni who share resources and expertise, and is open to like-minded people who want to join and develop contacts and collaborations internationally. Full Article text
twee Synthesis and crystal structure of the adduct between 2-pyridylselenyl chloride and isobutyronitrile By journals.iucr.org Published On :: 2024-02-06 The reaction between 2-pyridylselenenyl chloride and isobutyronitrile results in the formation of the corresponding cationic pyridinium-fused 1,2,4-selenodiazole, namely, 3-(propan-2-yl)-1,2,4-[1,2,4]selenadiazolo[4,5-a]pyridin-4-ylium chloride, C9H11N2Se+·Cl−, in high yield (89%). The structure of the compound, established by means of single-crystal X-ray analysis at 100 K, has monoclinic (P21/c) symmetry and revealed the presence of bifurcated chalcogen-hydrogen bonding Se⋯Cl−⋯H—Cl, and these non-covalent contacts were analysed by DFT calculations followed by a topological analysis of the electron-density distribution (ωB97XD/6-311++G** level of theory). Full Article text
twee Structural characterization of the supramolecular complex between a tetraquinoxaline-based cavitand and benzonitrile By journals.iucr.org Published On :: 2024-05-31 The structural characterization is reported of the supramolecular complex between the tetraquinoxaline-based cavitand 2,8,14,20-tetrahexyl-6,10:12,16:18,22:24,4-O,O'-tetrakis(quinoxaline-2,3-diyl)calix[4]resorcinarene (QxCav) with benzonitrile. The complex, of general formula C84H80N8O8·2C7H5N, crystallizes in the space group Poverline{1} with two independent molecules in the asymmetric unit, displaying very similar geometrical parameters. For each complex, one of the benzonitrile molecules is engulfed inside the cavity, while the other is located among the alkyl legs at the lower rim. The host and the guests mainly interact through weak C—H⋯π, C—H⋯N and dispersion interactions. These interactions help to consolidate the formation of supramolecular chains running along the crystallographic b-axis direction. Full Article text
twee Crystal structure and Hirshfeld surface analysis of a halogen bond between 2-(allylthio)pyridine and 1,2,4,5-tetrafluoro-3,6-diiodobenzene By journals.iucr.org Published On :: 2024-06-21 The crystal structure of the title 2:1 molecular complex between 2-(allylthio)pyridine and 1,2,4,5-tetrafluoro-3,6-diiodobenzene, C6F4I2·2C8H9NS, at 100 K has been determined in the monoclinic space group P21/c. The most noteworthy characteristic of the complex is the halogen bond between iodine and the pyridine ring with a short N⋯I contact [2.8628 (12) Å]. The Hirshfeld surface analysis shows that the hydrogen⋯hydrogen contacts dominate the crystal packing with a contribution of 32.1%. Full Article text
twee Coupling between 2-pyridylselenyl chloride and phenylselenocyanate: synthesis, crystal structure and non-covalent interactions By journals.iucr.org Published On :: 2024-09-17 A new pyridine-fused selenodiazolium salt, 3-(phenylselanyl)[1,2,4]selenadiazolo[4,5-a]pyridin-4-ylium chloride dichloromethane 0.352-solvate, C12H9N2Se2+·Cl−·0.352CH2Cl2, was obtained from the reaction between 2-pyridylselenenyl chloride and phenylselenocyanate. Single-crystal structural analysis revealed the presence of C—H⋯N, C—H⋯Cl−, C—H⋯Se hydrogen bonds as well as chalcogen–chalcogen (Se⋯Se) and chalcogen–halogen (Se⋯Cl−) interactions. Non-covalent interactions were explored by DFT calculations followed by topological analysis of the electron density distribution (QTAIM analysis). The structure consists of pairs of selenodiazolium moieties arranged in a head-to-tail fashion surrounding disordered dichloromethane molecules. The assemblies are connected by C—H⋯Cl− and C—H⋯N hydrogen bonds, forming layers, which stack along the c-axis direction connected by bifurcated Se⋯Cl−⋯H—C interactions. Full Article text
twee Link between b.c.c.–f.c.c. orientation relationship and austenite morphology in CF8M stainless steel By journals.iucr.org Published On :: 2024-10-01 Slow-cooled CF8M duplex stainless steel is used for critical parts of the primary coolant pipes of nuclear reactors. This steel can endure severe service conditions, but it tends to become more brittle upon very long-term aging (tens of years). Therefore, it is essential to understand its specific microstructure and temporal evolution. As revealed by electron backscatter diffraction (EBSD) analyses, the microstructure consists of millimetre-scale ferritic grains within which austenite lath packets have grown with preferred crystallographic orientations concerning the parent ferritic phase far from the ferrite grain boundaries. In these lath packets where the austenite phase is nucleated, the lath morphology and crystal orientation accommodate the two ferrite orientations. Globally, the Pitsch orientation relationship appears to display the best agreement with the experimental data compared with other classical relationships. The austenite lath packets are parallel plate-shaped laths, characterized by their normal n. A novel methodology is introduced to elucidate the expected relationship between n and the crystallographic orientation given the coarse interfaces, even though n is only partly known from the observation surface, in contrast to the 3D crystal orientations measured by EBSD. The distribution of retrieved normals n is shown to be concentrated over a set of discrete orientations. Assuming that the ferrite and austenite obey the Pitsch orientation relationship, the determined lath normals are close to an invariant direction of the parent phase given by the same orientation relationship. Full Article text
twee Studies Suggest a Possible Link Between Military Service and ALS By Published On :: Fri, 10 Nov 2006 06:00:00 GMT A limited body of evidence suggests an association between military service and later development of amyotrophic lateral sclerosis (ALS), a rare but fatal neurodegenerative disorder, says a new report from the Institute of Medicine. Full Article
twee Data Suggest a Possible Association Between Agent Orange Exposure and Hypertension, But the Evidence Is Limited By Published On :: Fri, 27 Jul 2007 05:00:00 GMT A new report from the Institute of Medicine finds suggestive but limited evidence that exposure to Agent Orange and other herbicides used during the Vietnam War is associated with an increased chance of developing high blood pressure in some veterans. Full Article
twee Link Between Ozone Air Pollution and Premature Death Confirmed By Published On :: Tue, 22 Apr 2008 05:00:00 GMT Short-term exposure to current levels of ozone in many areas is likely to contribute to premature deaths, says a new National Research Council report, which adds that the evidence is strong enough that the U.S. Environmental Protection Agency should include ozone-related mortality in health-benefit analyses related to future ozone standards. Full Article
twee Limited Data Suggest Possible Association Between Agent Orange Exposure And Ischemic Heart Disease And Parkinsons Disease In Vietnam Veterans By Published On :: Fri, 24 Jul 2009 05:00:00 GMT A new report from the Institute of Medicine finds suggestive but limited evidence that exposure to Agent Orange and other herbicides used during the Vietnam War is associated with an increased chance of developing ischemic heart disease and Parkinsons disease for Vietnam veterans. Full Article
twee New Report Recommends Research to Improve Understanding of Relationship Between Fatigue and Crash Risk for Truck and Bus Drivers By Published On :: Thu, 10 Mar 2016 06:00:00 GMT Insufficient sleep can decrease a commercial motor vehicle (CMV) driver’s level of alertness, which may increase the risk of a crash, yet little is known about effective ways to minimize that risk, says a new report from the National Academies of Sciences, Engineering, and Medicine. Full Article
twee Substantial Gap Exists Between Demand for Organ Transplants in U.S. and Number of Transplants Performed - New Report Offers Ethical, Regulatory, and Policy Framework for Research to Increase Quantity & Quality of Organs For Transplantation, Save Lives By Published On :: Tue, 10 Oct 2017 05:00:00 GMT The number of patients in the U.S. awaiting organ transplantation outpaces the amount of transplants performed in the U.S., and many donated organs are not transplanted each year due to several factors, such as poor organ function, says a new report from the National Academies of Sciences, Engineering, and Medicine. Full Article
twee Partnerships Between NASA and Industry Can Support Lunar Exploration, Say Two New Reports By Published On :: Thu, 07 Feb 2019 06:00:00 GMT Renewed interest in exploration of the moon has the potential to benefit lunar science greatly and could evolve into a program facilitated by partnerships between commercial companies and NASA’s Science Mission Directorate (SMD), say companion reports by the National Academies of Sciences, Engineering, and Medicine. Full Article
twee Determining Whether There Is a Link Between Antimalarial Drugs and Persistent Health Effects Requires More Rigorous Studies By Published On :: Tue, 25 Feb 2020 05:00:00 GMT Although the immediate side effects of antimalarial drugs are widely recognized, few studies were designed specifically to examine health problems that might occur or persist months or years after people stopped taking them. Full Article