secondary

Amgen Foundation Announces New $4 Million Commitment to Bring Hands-On Biotechnology Labs to Secondary School Students - The Amgen Biotech Experience in the classroom

The Amgen Biotech Experience empowers teachers to bring biotechnology into their classrooms to spark students� love of science and features a hands-on curriculum that introduces students to the excitement of scientific discovery.




secondary

Dealing With Secondary Infertility in Males

Secondary infertility arises when a couple has at least one child, but doesn't conceive after at least one year of trying. In many cases, about one-third




secondary

Timetable for Punjab Senior Secondary Exams Released : View Now!

The time table for the Punjab Senior Secondary Board Examinations (PSSBE) has been published for the class 12 students. The Punjab School Education Board (PSEB) has made an announcement about the board exams schedule that are set to begin on February




secondary

The gas phase ozonolysis and secondary OH production of cashmeran, a musk compound from fragrant volatile chemical products

Environ. Sci.: Processes Impacts, 2024, Advance Article
DOI: 10.1039/D4EM00452C, Paper
Ayomide A. Akande, Nadine Borduas-Dedekind
We quantified the lifetime of cashmeran, a musk compound, against 20 ppbv of O3 to be 85 days. In the presence of O2, cashmeran may influence the oxidative capacity indoors via production of secondary OH radicals (up to 5.1 × 105 molec cm−3).
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secondary

Odisha: Board of Secondary Education to announce HSC results at 10 a.m.




secondary

Influence of the secondary ligand, phenanthroline, on the antioxidant and pro-oxidant and cytotoxic effects of the oxidovanadium(IV)/naringin complex

New J. Chem., 2024, Advance Article
DOI: 10.1039/D4NJ00655K, Paper
Andrés G. Restrepo, Angel L. Huamani, Alexandra Velásquez Bravo, Pablo J. González, Luciana G. Naso, Evelina G. Ferrer, Patricia A. M. Williams
Replacement of phen in [VO(Narg)2] induces greater π electronic delocalization, thus improving antioxidant action. However, due to its lipophilic character, cellular uptake of V is increased, leading to enhanced pro-oxidant and anticancer effects.
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secondary

Nitro group and K+-based secondary building units for the self-assembly of 3D coordination polymers built on dinuclear dianionic helicate connectors

CrystEngComm, 2024, Advance Article
DOI: 10.1039/D4CE00255E, Paper
Open Access
Raúl Mendoza-Báez, Alan Molina-Renteria, Juan Olguín
Two dinuclear dianionic helicates, K2[MII2(L)3] M = MnII (1) and NiII (2), based on 2-hydroxy-5-nitrobenzaldehyde, self-assemble into novel 3D coordination polymers due to nitro groups acting as secondary assembly instruction.
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secondary

Synthesis of alkenylphosphine oxides via Tf2O promoted addition–elimination of ketones and secondary phosphine oxides

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00318G, Communication
Jiangkai Ma, Lianjie Wang, Anjiang Qiao, Zhongxian Li, Fengqian Zhao, Junliang Wu
An efficient method for the synthesis of alkenylphosphine oxides via the addition-elimination of SPOs to ketones has been developed. The reaction exhibits good yields and compatibility. Several conversions have also proven the value of this method.
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secondary

Visible light-driven photocatalytic sulfonative oxidation of benzyl secondary amines

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00348A, Paper
Yong-Xiang Lü, Xinqian Wang, Ying-Ming Pan, Keyume Ablajan
A method for the α-oxidation and sulfonation of benzyl secondary amines was developed utilizing Ir(III) or Eosin Y as the photocatalyst in the presence of O2 as a green oxidant....
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secondary

A Pb-free Sn–Bi alloy mount preparation method for secondary ion mass spectrometry (SIMS) analyses

J. Anal. At. Spectrom., 2024, Advance Article
DOI: 10.1039/D4JA00252K, Technical Note
Wan-Feng Zhang, Qing Yang, Xiao-Ping Xia, De-Wen Zheng, Ze-Xian Cui, Yan-Qiang Zhang, Yi-Gang Xu
Sample preparation is a critical step for in situ analysis. In this study, we proposed an easy-to-prepare Pb-free alloy for sample mount preparation, which is suitable for SIMS water content and isotope analyses.
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secondary

Assam Higher Secondary Education Council(AHSEC) result to be declared tomorrow : Where to check Results

The Assam Higher Secondary Education Council (AHSEC) will be declared the results of the Higher Secondary (HS) examinations on 9 May 2024. Assam state education minister Ranoj Pegu informed on Wednesday, 7 May 2024. Assam Higher Secondary Education Council (AHSEC) will declare HS Exam Results-2024 tomorrow at 9 AM. The official Press Release will be […]

The post Assam Higher Secondary Education Council(AHSEC) result to be declared tomorrow : Where to check Results appeared first on TIMES OF ASSAM by Priyankan Goswami.




secondary

Post-secondary chemistry education in developing countries [electronic resource] : advancing diversity in pedagogy and practice / Dawn I. Fox, Medeba Uzzi, and Jacqueline Murray

Oxford : Taylor & Francis Group, 2024.




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Chemical bonding in Swedish upper secondary school education: a force-based teaching model for enhanced understanding

Chem. Educ. Res. Pract., 2025, Accepted Manuscript
DOI: 10.1039/D4RP00258J, Paper
Catalin Koro Arvidsson
This study investigates if a force-based teaching approach, based on quantum mechanical principles and developed in a lesson study, would enhance the understanding of chemical bonding among upper secondary school...
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Why are schools segregated? Evidence from the secondary-school match in Amsterdam [electronic journal].




secondary

The Impact of Product Recalls on the Secondary Market:Evidence from Dieselgate [electronic journal].




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Direct synthesis of N-perfluoro-tert-butyl secondary amines from N-trifluoromethyl secondary amines

Chem. Sci., 2024, Advance Article
DOI: 10.1039/D4SC06335J, Edge Article
Open Access
Leibing Wang, Zhongyu Feng, Zhen Luo, Zihao Guo, Jieping Wang, Wenbin Yi
The one-step direct synthesis of N-perfluoro-tert-butyl secondary amines utilizes TMSCF3 as the sole CF3 source and the starting material N-CF3 secondary amine itself as the hydrogen source. PFtB amines can be effectively employed in 19F MRI.
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secondary

Sovereign Gold Bonds: Secondary market thrives amidst drought in primary issuances

Recent data reveals a significant increase in trading volume, with retail holdings growing 63 per cent year-on-year. 



  • Gold & Silver

secondary

Zn(II) coordination influences the secondary structure, but not antimicrobial activity of the N-terminal histatin 3 hydrolysis product

Dalton Trans., 2024, Advance Article
DOI: 10.1039/D4DT02274B, Paper
Emilia Dzień, Joanna Wątły, Aleksandra Hecel, Aleksandra Mikołajczyk, Agnieszka Matera-Witkiewicz, Miquel Adrover, Miquel Barceló-Oliver, Alicia Domínguez-Martín, Magdalena Rowińska-Żyrek
Histatin 3 and 4 have greater activity against Gram(+) than Gram(−) bacteria, and Cu(II) or Zn(II) binding can moderately increase their antimicrobial activity. The N-terminal part of histatin 3 becomes α-helical upon Zn(II) binding.
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secondary

General synthesis of secondary imines via reductive coupling of carbonyl and nitro compounds employing a reusable cobalt catalyst

React. Chem. Eng., 2024, 9,925-929
DOI: 10.1039/D3RE00509G, Paper
Chaochong Zhang, Yurong He, Peng Zhou, Yuandie Ma, Ziliang Yuan, Guoqiang She, Zhe Zheng, Juncheng Hu, Qingqing Jiang, Jason Chun-Ho Lam, Bo Han, Zehui Zhang, Bing Liu
Reusable nitrogen-doped carbon-encapsulated Co nanoparticle catalysts are found robust for the synthesis of secondary imines via the reductive amination of carbonyl compounds with NH3 or directly with nitro compounds.
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secondary

Photochemical organocatalytic heteroarylation of anilines and secondary alicyclic amines in continuous-flow

React. Chem. Eng., 2024, Advance Article
DOI: 10.1039/D4RE00130C, Paper
Egor N. Boronin, Milena M. Svetlakova, Ilya I. Vorobyov, Yulia B. Malysheva, Yuri V. Polushtaytsev, Sergey N. Mensov, Andrey V. Vorotyntsev, Alexey Yu. Fedorov, Timothy Noël, Alexander V. Nyuchev
Photoorganocatalytic arylation of amines in continuous-flow enables scaling up including decreasing of both reaction time and catalyst loading.
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secondary

DFT calculation-aided optimisation of a chiral phosphoric acid catalyst: case study of kinetic resolution of racemic secondary alcohols through lactonisation

Catal. Sci. Technol., 2024, Advance Article
DOI: 10.1039/D4CY01029A, Paper
Haiting Ye, Takuma Sato, Taishi Nakanishi, Shigetomo Ito, Shigenobu Umemiya, Masahiro Terada
Chiral phosphoric acid catalysts were screened rationally and efficiently through the theoretical prediction model of the kinetic resolution of racemic γ-hydroxybutyrate without performing an exhaustive search for plausible lactonisation pathways.
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secondary

Macroscopic chiral symmetry breaking in gelation of Fmoc-amino acids: homochiral selective secondary nucleation promoted by the choice of solvent or stirring

Nanoscale, 2024, Advance Article
DOI: 10.1039/D4NR04011B, Communication
Kentaro Tashiro
Homochiral selective secondary nucleation, promoted by the choice of solvent or stirring, was suggested as the key process for the emergence of macroscopic chiral symmetry breaking in the gelation of Fmoc amino acids.
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secondary

Lava Agni 3 with secondary display running on MediaTek Dimensity 7300X launched: Prices, features, availability

The secondary display can be used for previewing selfies using the rear camera, calling, notifications, music control, steps, calorie tracker, recorder




secondary

Mapping support for primary and secondary metal production - Environment Working Paper

Public support for metal extraction and processing has received little attention relative to that for the agriculture, energy, or fisheries sectors. This report addresses this knowledge gap by mapping out the most common forms of support provided for primary metals (produced from mineral ores) and secondary metals (produced from scrap).




secondary

Education: OECD calls for reform of postsecondary vocational education and training in Denmark

Denmark should build on the strengths of its vocational and educational training programme to ensure that young people enter the labour market with the skills companies need and to meet the national goal of having 60% of young people enter higher education by 2020, according to a new OECD report.




secondary

OECD: Postsecondary education key to maintaining global standing of U.S. workforce

The United States should improve postsecondary career and technical training provisions to help students transition smoothly into education programs and the labor market, according to a new OECD report published today.




secondary

OECD: Postsecondary education key to maintaining global standing of U.S. workforce

09/07/2013 - The United States should improve postsecondary career and technical training provisions to help students transition smoothly into education programs and the labor market, according to a new OECD report published today.




secondary

England should expand provision of postsecondary vocational programmes, says OECD

England should expand the provision of postsecondary vocational training in order to meet the changing needs of students and employers, according to a new OECD report.




secondary

New Insights from TALIS 2013 - Teaching and Learning in Primary and Upper Secondary Education

This report offers a broader view of teachers and school principals across all levels of compulsory education, and all the similarities and differences in the issues they are facing.




secondary

What are the risks of missing out on upper secondary education? (OECD Education Today Blog)

In just a couple of decades, upper secondary schooling has been transformed from a vehicle towards upward social mobility into a minimum requirement for life in modern societies.




secondary

Education Indicators in Focus No. 34 - What are the advantages today of having an upper secondary qualification?

In most OECD countries, the large majority of adults had at least an upper secondary qualification in 2013, making the completion of upper secondary education the minimum threshold for successful labour market entry and continued employability or the pursuit of further education.




secondary

Education Indicators in Focus No. 38 - How is learning time organised in primary and secondary education?

The number and length of school holidays differs significantly across OECD countries, meaning the number of instructional days in primary and secondary education ranges from 162 days a year in France to more than 200 days in Israel and Japan.




secondary

The competition between dehydrogenation and dehydration reactions for primary and secondary alcohols over gallia: unravelling the effects of molecular and electronic structure via a two-pronged theoretical/experimental approach

Catal. Sci. Technol., 2020, Advance Article
DOI: 10.1039/C9CY02603G, Paper
Lorella Izzo, Tommaso Tabanelli, Fabrizio Cavani, Paola Blair Vàsquez, Carlo Lucarelli, Massimo Mella
The relative dehydrogenation/dehydration reactivity imparted by nanostructured gallium(III) oxide on alcohols was investigated via electronic structure calculations, reactivity tests and DRIFT-IR spectroscopy.
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secondary

Domestic Market Opportunities For Alaska Lumber-Species Preferences By Secondary Wood Products Manufacturers In The Continental United States.

New equipment, technology, and marketing efforts have allowed Alaska's wood products producers to consider opportunities previously unavailable to them. Until recently, the primary product produced by Alaska firms was rough, unseasoned lumber sold primarily within local markets. Given the purchase and installation of new drying and planing equipment, Alaska producers can now enter domestic and export markets for a variety of secondary wood products. Previously underutilized species, such as red alder (Alnus rubra Bong.), paper birch (Betula papyrifera Marsh.), and Alaska yellow-cedar (Chamaecyparis nootkatensis (D. Don) Spach) are also gaining in popularity and market potential. A detailed knowledge of species preferences for Alaska lumber, across business types and geographic regions, will be essential if Alaska producers are to be competitive.




secondary

Secondary analysis confirms safety of blood thinning agent

Research Highlights: The blood thinner apixaban, which treats and prevents blood clots in some people with irregular heart rhythm, is safe and effective in stroke patients. Apixaban is associated with less bleeding, death and hospitalization than ...




secondary

Mitigation of secondary phase formation during waste vitrification

A method for vitrification of waste to reduce the formation of persistent secondary phases comprising separating at least one glass frit constituent from an initial glass frit to form a modified glass frit. The waste, modified glass frit, and the at least one glass frit constituent are mixed together with the modified glass frit and the at least one glass frit constituent being added as separate components. The resulting mixture is vitrified.




secondary

Inductive fault current limiter with divided secondary coil configuration

An inductive fault current limiter (1), has a normally conducting primary coil assembly (2) with a multiplicity of turns (3), and a superconducting, short-circuited secondary coil assembly (4). The primary coil assembly (2) and the secondary coil assembly (4) are disposed at least substantially coaxially with respect to each other and at least partially interleaved in each other. The secondary coil assembly (4) has a first coil section (4a) disposed radially inside the turns (3) of the primary coil assembly (2) and a second coil section (4b) disposed radially outside the turns (3) of the primary coil assembly (2). The fault current limiter has an increased inductance ratio.




secondary

Continuous production process of tertiary alcohols by radical addition of secondary alcohols to alkenes

A process is disclosed for producing tertiary alcohols by radical addition of secondary alcohols to alkenes. The reaction is carried out as a continuous process in the presence of an organic peroxide as a radical initiator and during a mean contact time of the reaction mixture of up to a maximum of 1 hour.




secondary

Electronic device, control method for electronic device, recharge-rate estimating method for secondary battery, and charging control method for secondary battery

A first circuit having a first coil electrically charges a second circuit having a second coil through electromagnetic coupling of the two coils. When data signals are to be transferred between the first and second circuits, signal transfer is started only after the second circuit has been charged for a predetermined period of time. The position relationship between the coils is also detected, and a charging/transfer selector changes a duty ratio between charge transfer and data transfer in accordance with the detected result. The charge is transferred in an intermittent manner, and the charging rate is adjusted according to the difference between the voltage of a secondary battery observed during a charging phase and the voltage of the secondary battery observed a certain time after interruption of the charging phase, or vice versa.




secondary

Organoxysilane compounds having silyl-protected secondary amino group and making method

A silane compound having a secondary amino group protected with a specific silyl group is useful as silane coupling agent, resin additive, textile treating agent, surface treating agent, paint additive, and adhesive.




secondary

Secondary assembly drive of an internal combustion engine and method for operating same

A secondary assembly drive of an internal combustion engine and a method for operating same are provided. The secondary assembly drive includes: a first drive wheel (1) which can be rotatably connected to a crank shaft (CR) of the internal combustion engine, an electric machine which can be operated either as a generator (AL) of as a motor (M) and a second drive wheel (2) which can be rotatably connected to the electric machine (AL, M), an air-conditioning compressor (A/C) and a third drive wheel (3) which can be rotatably connected to the air-conditioning compressor, a traction element (4) which rotates infinitely and which wraps around the drive wheels, and an actuable clutch (7) for disconnecting the drive of the electric machine and of the air-conditioning compressor from the crankshaft when necessary. In addition, the air-conditioning compressor is designed for operation in both rotational directions, and a reversal of the rotational direction between the generator operating mode and the motor operating mode of the electric machine is provided.




secondary

Secondary assembly drive of an internal combustion engine and method for operating same

A secondary assembly drive of an internal combustion engine and a method for operating same are provided. The secondary assembly drive includes, in two drive planes, an assembly drive (2) and a starter drive (12) and permits, in addition to a normal operating mode, the following operating modes: —starting of the internal combustion engine, —boosting of the internal combustion engine, —air-conditioning, and —deactivation of the assembly drive (2).




secondary

Connecting structure for secondary battery and battery pack including the same

A connecting structure for a secondary battery for electrically connecting a core pack where two or more unit cells are electrically connected and a protection circuit module made of the unit cells of the core pack and a PCB substrate. The connecting structure includes a metal plate having an electrode connecting unit connected to an electrode of each unit cell of the core pack and a circuit connecting unit connected to the protection circuit module; and a circuit terminal unit electrically connected to the circuit connecting unit by being located in a connection hole formed in the PCB substrate of the protection circuit module so that the upper and lower portions of the PCB substrate communicate with each other. The circuit connecting unit is coupled and electrically connected to the circuit terminal unit by means of a connection method which allows selective connection and separation.




secondary

Cable-type secondary battery and preparation thereof

The present disclosure provides a cable-type secondary battery, comprising: an inner electrode; and a sheet-form laminate of separation layer-outer electrode, spirally wound to surround the outer surface of the inner electrode, the laminate being formed by carrying out compression for the integration of a separation layer for preventing a short circuit, and an outer electrode. According to the present disclosure, the electrodes and the separation layer are compressed and integrated to minimize ununiform spaces between the separation layer and the outer electrode and reduce the thickness of a battery to be prepared, thereby decreasing resistance and improving ionic conductivity within the battery. Also, the separation layer coming into contact with the electrodes absorbs an electrolyte solution to induce the uniform supply of the electrolyte solution into the outer electrode active material layer, thereby enhancing the stability and performances of the cable-type secondary battery.




secondary

Cap assembly and rectangular type secondary battery having the cap assembly

In a cap assembly and a rectangular type secondary battery having the cap assembly, the cap assembly includes a cap plate made of a metallic or nonmetallic material, a hollow, low-melting point glass metal tube inserted into a hole formed in the cap plate, and a metallic or nonmetallic pin inserted into the hollow glass metal tube, wherein the cap plate, the glass metal tube and the pin are atomically bonded with one another at their contact areas by high-temperature heating.




secondary

Positive electrode active material particles for lithium ion secondary batteries, positive electrode using the same, and lithium ion secondary battery

Positive electrode active material particles for lithium ion secondary batteries include: a core particle including a first olivine-structured, lithium-containing phosphate compound which includes Fe and/or Mn and Li; and a shell layer attached to the surface of the core particle. The shell layer includes a second olivine-structured, lithium-containing phosphate compound which includes Fe and/or Mn and Li. At least the core particle includes a phosphorous compound represented by the formula (1): MemPnOp, where Me is Fe and/or Mn, 0




secondary

Composite material tape for lithium secondary battery and lithium secondary battery using the same

A composite material tape and a lithium secondary battery using the same are provided. The composite material tape includes an organic base and at least one inorganic element dispersed within the organic base. The composite material tapes of the present invention exhibit improved Insulative and heat-resistant characteristics.




secondary

Non-aqueous electrolyte and lithium secondary battery using the same

The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising an ester-based compound having a branched-chain alkyl group and an ester-based compound having a straight-chain alkyl group; and a lithium secondary battery using the same.




secondary

Bake hardening steel with excellent surface properties and resistance to secondary work embrittlement, and preparation method thereof

Provided are a bake hardening steel having a crystalline grain size of ASTM No. 9 or more and a method for preparing the bake hardening steel by controlling the winding, rolling and cooling conditions. The bake hardening steel includes: C:0.0016˜0.0025%, Si:0.02% or less, P:0.01˜0.05%, S:0.01% or less, sol.Al:0.08˜0.12%, N:0.0025% or less, Ti:0.003% or less, Nb:0.003˜0.011%, Mo:0.01˜0.1%, B:0.0005˜0.0015% or less, balance Fe and other inevitable impurities, wherein % is weight %, and Mn and P satisfy the relation of −30(° C.)≧803P−24.4Mn−58.




secondary

Production process for composite oxide, positive-electrode active material for lithium-ion secondary battery and lithium-ion secondary battery

A production process for composite oxide expressed by a compositional formula: LiMn1-xAxO2, where “A” is one or more kinds of metallic elements other than Mn; and 0≦“x”