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L3-edge X-ray spectroscopy of rhodium and palladium compounds

L3-edge high-energy-resolution fluorescence-detection X-ray absorption near-edge structure (XANES) spectra for palladium and rhodium compounds are presented, with focus on their electronic structures. The data are compared with transmission XANES spectra recorded at the K-edge. A correlation between the absorption edge energy and the metal ion oxidation state is not observed. Despite the different filling of the 4d orbitals and different local coordination, the Rh and Pd compounds show remarkably similar spectral shapes. Calculation of the density of states and of the L3-XANES data reproduce the experimental results.




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Double-edge scan wavefront metrology and its application in crystal diffraction wavefront measurements

Achieving diffraction-limited performance in fourth-generation synchrotron radiation sources demands monochromator crystals that can preserve the wavefront across an unprecedented extensive range. There is an urgent need for techniques of absolute crystal diffraction wavefront measurement. At the Beijing Synchrotron Radiation Facility (BSRF), a novel edge scan wavefront metrology technique has been developed. This technique employs a double-edge tracking method, making diffraction-limited level absolute crystal diffraction wavefront measurement a reality. The results demonstrate an equivalent diffraction surface slope error below 70 nrad (corresponding to a wavefront phase error of 4.57% λ) r.m.s. within a nearly 6 mm range for a flat crystal in the crystal surface coordinate. The double-edge structure contributes to exceptional measurement precision for slope error reproducibility, achieving levels below 15 nrad (phase error reproducibility < λ/100) even at a first-generation synchrotron radiation source. Currently, the measurement termed double-edge scan (DES) has already been regarded as a critical feedback mechanism in the fabrication of next-generation crystals.




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Investigating the missing-wedge problem in small-angle X-ray scattering tensor tomography across real and reciprocal space

Small-angle-scattering tensor tomography is a technique for studying anisotropic nanostructures of millimetre-sized samples in a volume-resolved manner. It requires the acquisition of data through repeated tomographic rotations about an axis which is subjected to a series of tilts. The tilt that can be achieved with a typical setup is geometrically constrained, which leads to limits in the set of directions from which the different parts of the reciprocal space map can be probed. Here, we characterize the impact of this limitation on reconstructions in terms of the missing wedge problem of tomography, by treating the problem of tensor tomography as the reconstruction of a three-dimensional field of functions on the unit sphere, represented by a grid of Gaussian radial basis functions. We then devise an acquisition scheme to obtain complete data by remounting the sample, which we apply to a sample of human trabecular bone. Performing tensor tomographic reconstructions of limited data sets as well as the complete data set, we further investigate and validate the missing wedge problem by investigating reconstruction errors due to data incompleteness across both real and reciprocal space. Finally, we carry out an analysis of orientations and derived scalar quantities, to quantify the impact of this missing wedge problem on a typical tensor tomographic analysis. We conclude that the effects of data incompleteness are consistent with the predicted impact of the missing wedge problem, and that the impact on tensor tomographic analysis is appreciable but limited, especially if precautions are taken. In particular, there is only limited impact on the means and relative anisotropies of the reconstructed reciprocal space maps.




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Tomo Live: an on-the-fly reconstruction pipeline to judge data quality for cryo-electron tomography workflows

Data acquisition and processing for cryo-electron tomography can be a significant bottleneck for users. To simplify and streamline the cryo-ET workflow, Tomo Live, an on-the-fly solution that automates the alignment and reconstruction of tilt-series data, enabling real-time data-quality assessment, has been developed. Through the integration of Tomo Live into the data-acquisition workflow for cryo-ET, motion correction is performed directly after each of the acquired tilt angles. Immediately after the tilt-series acquisition has completed, an unattended tilt-series alignment and reconstruction into a 3D volume is performed. The results are displayed in real time in a dedicated remote web platform that runs on the microscope hardware. Through this web platform, users can review the acquired data (aligned stack and 3D volume) and several quality metrics that are obtained during the alignment and reconstruction process. These quality metrics can be used for fast feedback for subsequent acquisitions to save time. Parameters such as Alignment Accuracy, Deleted Tilts and Tilt Axis Correction Angle are visualized as graphs and can be used as filters to export only the best tomograms (raw data, reconstruction and intermediate data) for further processing. Here, the Tomo Live algorithms and workflow are described and representative results on several biological samples are presented. The Tomo Live workflow is accessible to both expert and non-expert users, making it a valuable tool for the continued advancement of structural biology, cell biology and histology.




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Bridging the microscopic divide: a comprehensive overview of micro-crystallization and in vivo crystallography

A series of events underscoring the significant advancements in micro-crystallization and in vivo crystallography were held during the 26th IUCr Congress in Melbourne, positioning microcrystallography as a pivotal field within structural biology. Through collaborative discussions and the sharing of innovative methodologies, these sessions outlined frontier approaches in macromolecular crystallography. This review provides an overview of this rapidly moving field in light of the rich dialogues and forward-thinking proposals explored during the congress workshop and microsymposium. These advances in microcrystallography shed light on the potential to reshape current research paradigms and enhance our comprehension of biological mechanisms at the molecular scale.




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Bridging length scales in hard materials with ultra-small angle X-ray scattering – a critical review

Owing to their exceptional properties, hard materials such as advanced ceramics, metals and composites have enormous economic and societal value, with applications across numerous industries. Understanding their microstructural characteristics is crucial for enhancing their performance, materials development and unleashing their potential for future innovative applications. However, their microstructures are unambiguously hierarchical and typically span several length scales, from sub-ångstrom to micrometres, posing demanding challenges for their characterization, especially for in situ characterization which is critical to understanding the kinetic processes controlling microstructure formation. This review provides a comprehensive description of the rapidly developing technique of ultra-small angle X-ray scattering (USAXS), a nondestructive method for probing the nano-to-micrometre scale features of hard materials. USAXS and its complementary techniques, when developed for and applied to hard materials, offer valuable insights into their porosity, grain size, phase composition and inhomogeneities. We discuss the fundamental principles, instrumentation, advantages, challenges and global status of USAXS for hard materials. Using selected examples, we demonstrate the potential of this technique for unveiling the microstructural characteristics of hard materials and its relevance to advanced materials development and manufacturing process optimization. We also provide our perspective on the opportunities and challenges for the continued development of USAXS, including multimodal characterization, coherent scattering, time-resolved studies, machine learning and autonomous experiments. Our goal is to stimulate further implementation and exploration of USAXS techniques and inspire their broader adoption across various domains of hard materials science, thereby driving the field toward discoveries and further developments.




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Pyrazine-bridged polymetallic copper–iridium clusters

Single crystals of the mol­ecular compound, {Cu20Ir6Cl8(C21H24N2)6(C4H4N2)3]·3.18CH3OH or [({Cu10Ir3}Cl4(IMes)3(pyrazine))2(pyrazine)]·3.18CH3OH [where IMes is 1,3-bis­(2,4,6-trimethylphen­yl)imidazol-2-yl­idene], with a unique heterometallic cluster have been prepared and the structure revealed using single-crystal X-ray diffraction. The mol­ecule is centrosymmetric with two {Cu10Ir3} cores bridged by a pyrazine ligand. The polymetallic cluster contains three stabilizing N-heterocyclic carbenes, four Cl ligands, and a non-bridging pyrazine ligand. Notably, the Cu—Ir core is arranged in an unusual shape containing 13 vertices, 22 faces, and 32 sides. The atoms within the trideca­metallic cluster are arranged in four planes, with 2, 4, 4, 3 metals in each plane. Ir atoms are present in alternate planes with an Ir atom featuring in the peripheral bimetallic plane, and two Ir atoms featuring on opposite sides of the non-adjacent tetra­metallic plane. The crystal contains two disordered methanol solvent mol­ecules with an additional region of non-modelled electron density corrected for using the SQUEEZE routine in PLATON [Spek (2015). Acta Cryst. C71, 9–18]. The given chemical formula and other crystal data do not take into account the unmodelled methanol solvent mol­ecule(s).




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Revisiting the hydrogenation behavior of NdGa and its hydride phases

NdGa hydride and deuteride phases were prepared from high-quality NdGa samples and their structures characterized by powder and single-crystal X-ray diffraction and neutron powder diffraction. NdGa with the orthorhombic CrB-type structure absorbs hydrogen at hydrogen pressures ≤ 1 bar until reaching the composition NdGaH(D)1.1, which maintains a CrB-type structure. At elevated hydrogen pressure additional hydrogen is absorbed and the maximum composition recovered under standard temperature and pressure conditions is NdGaH(D)1.6 with the Cmcm LaGaH1.66-type structure. This structure is a threefold superstructure with respect to the CrB-type structure. The hydrogen atoms are ordered and distributed on three fully occupied Wyckoff positions corresponding to tetrahedral (4c, 8g) and trigonal–bipyramidal (8g) voids in the parent structure. The threefold superstructure is maintained in the H-deficient phases NaGaH(D)x until 1.6 ≥ x ≥ 1.2. At lower H concentrations, coinciding with the composition of the hydride obtained from hydrogenation at atmospheric pressure, the unit cell of the CrB-type structure is resumed. This phase can also display H deficiency, NdGaH(D)y (1.1 ≥ y ≥ 0.9), with H(D) exclusively situated in partially empty tetrahedral voids. The phase boundary between the threefold superstructure (LaGaH1.66 type) and the onefold structure (NdGaH1.1 type) is estimated on the basis of phase–composition isotherms and neutron powder diffraction to be x = 1.15.




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Neural network analysis of neutron and X-ray reflectivity data incorporating prior knowledge

Due to the ambiguity related to the lack of phase information, determining the physical parameters of multilayer thin films from measured neutron and X-ray reflectivity curves is, on a fundamental level, an underdetermined inverse problem. This ambiguity poses limitations on standard neural networks, constraining the range and number of considered parameters in previous machine learning solutions. To overcome this challenge, a novel training procedure has been designed which incorporates dynamic prior boundaries for each physical parameter as additional inputs to the neural network. In this manner, the neural network can be trained simultaneously on all well-posed subintervals of a larger parameter space in which the inverse problem is underdetermined. During inference, users can flexibly input their own prior knowledge about the physical system to constrain the neural network prediction to distinct target subintervals in the parameter space. The effectiveness of the method is demonstrated in various scenarios, including multilayer structures with a box model parameterization and a physics-inspired special parameterization of the scattering length density profile for a multilayer structure. In contrast to previous methods, this approach scales favourably when increasing the complexity of the inverse problem, working properly even for a five-layer multilayer model and a periodic multilayer model with up to 17 open parameters.




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FilmWeek: ‘The Conjuring: The Devil Made Me Do It,’ ‘Spirit Untamed,’ ‘Edge Of The World’ And More

Vera Farmiga and Patrick Wilson in "The Conjuring: The Devil Made Me Do It"; Credit: Warner Bros. Pictures

FilmWeek Marquee

Larry Mantle and KPCC film critics Amy Nicholson, Wade Major and Charles Solomon review this weekend’s new movie releases on streaming and on demand platforms.

This content is from Southern California Public Radio. View the original story at SCPR.org.




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Periodic graphs with coincident edges: folding-ladder and related graphs

We explore a special class of periodic graphs, ladder graphs, whose edges can coincide when embedded vertices are moved. Many of these exhibit additional non-crystallographic graph symmetries.




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Complete classification of six-dimensional iso-edge domains

We enumerate the 55083357 iso-edge subdivisions of six-dimensional translational lattices. We report on the use of the method of canonical forms that allows us to apply hashing techniques used in modern databases.




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FilmWeek: ‘The Conjuring: The Devil Made Me Do It,’ ‘Spirit Untamed,’ ‘Edge Of The World’ And More

Shot from the film "The Conjuring: The Devil Made Me Do It"; Credit: Warner Bros. Pictures

FilmWeek

Larry Mantle and KPCC film critics Amy Nicholson, Wade Major and Charles Solomon review this weekend’s new movie releases on streaming and on demand platforms.

Our FilmWeek critics have been curating personal lists of their favorite TV shows and movies to binge-watch during self-quarantine. You can see recommendations from each of the critics and where you can watch them here.

Guests:

Amy Nicholson, film critic for KPCC, film writer for The New York Times and host of the podcast ‘Unspooled’ and the podcast miniseries “Zoom”; she tweets @TheAmyNicholson

Wade Major, film critic for KPCC and CineGods.com

Charles Solomon, film critic for KPCC, Animation Scoop and Animation Magazine

This content is from Southern California Public Radio. View the original story at SCPR.org.




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Director Edgar Wright On His New Documentary ‘The Sparks Brothers’ And Why The Musicians Deserve To Be LA Rock Royalty

Edgar Wright attends the 55th Annual International Cinematographers Guild Publicists Awards at The Beverly Hilton Hotel on March 2, 2018 in Beverly Hills, California.; Credit: Tommaso Boddi/Getty Images

FilmWeek

The joke about Sparks — if you’ve even heard of them — is that it’s the best British band to come out of America. That confusion is why Edgar Wright, the director of “Baby Driver” and “Shaun of the Dead,” wanted to make his first documentary about the group, headed by brothers Ron and Russell Mael. Quite simply, Wright was tired of explaining who the band was and why he loves them. His documentary, called “The Sparks Brothers,” premiered at this year’s Sundance Film Festival. John Horn talked with Wright after its January premiere about his personal connection to the band, how he connected with the brother, the editing process of the documentary and more. The film is in theaters now.

With guest host John Horn

Guest: 

Edgar Wright, director of the new documentary “The Sparks Brothers;” he tweets @edgarwright

This content is from Southern California Public Radio. View the original story at SCPR.org.




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New way for bridges to withstand earthquakes: Support column design

Full Text:

Bridges make travel faster and more convenient, but, in an earthquake, these structures are subject to forces that can cause extensive damage and make them unsafe. Now civil and environmental engineer Petros Sideris of Texas A&M University is leading a National Science Foundation (NSF)-funded research project to investigate the performance of hybrid sliding-rocking (HSR) columns. HSR columns provide the same support as conventional bridge infrastructure columns but are more earthquake-resistant. HSR columns are a series of individual concrete segments held together by steel cables that allow for controlled sliding and rocking. This allows the columns to shift without damage, while post-tensioning strands ensure that at the end of an earthquake the columns are pushed back to their original position. Conventional bridges are cast-in-place monolithic concrete elements that are strong but inflexible. Structural damage in these bridge columns, typically caused by a natural disaster, often forces a bridge to close until repairs are completed. But bridges with HSR columns can withstand large earthquakes with minimal damage and require minor repairs, likely without bridge closures. Such infrastructure helps with post-disaster response and recovery and can save thousands in taxpayer dollars. In an earthquake, HSR columns provide "multiple advantages to the public," Sideris said. "By preventing bridge damage, we can maintain access to affected areas immediately after an event for response teams to be easily deployed, and help affected communities recover faster. In mitigating losses related to post-event bridge repairs and bridge closures, more funds can be potentially directed to supporting the recovery of the affected communities." According to Joy Pauschke, NSF program director for natural hazards engineering, "NSF invests in fundamental engineering research so that, in the future, the nation's infrastructure can be more resilient to earthquakes, hurricanes, and other forces of nature."

Image credit: Texas A&M University




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Judge Denies Britney Spears' Request To Have Her Father Removed From Conservatorship

A judge has denied Britney Spears' request to remove her father, Jamie Spears (left), as a co-conservator.; Credit: /AP

Anastasia Tsioulcas | NPR

A Los Angeles Superior Court judge signed an order Wednesday denying Britney Spears' request to have her father, Jamie Spears, removed from the financial aspects of her conservatorship.

Judge Brenda Penny denied the request, which was first filed by Spears' attorney, Samuel D. Ingham III, last November. The judge's decision comes after the singer appeared in court last Wednesday to make a direct appeal to the court. In that emotional statement, Spears said that she was being exploited and "bullied" by the conservatorship — and specifically, by her father.

Until recently, both the financial and personal arms of the conservatorship were controlled by Spears' father, Jamie Spears.

Last year, Ingham stated in a filing that Spears "strongly opposed" her father as conservator, and that she refused to perform if he remained in charge of her career.

In February, Judge Penny allowed a wealth-management company, Bessemer Trust, to come in as a co-conservator for the financial arm of Spears' arrangement. Jamie Spears remains the main conservator for all other aspects of Spears' conservatorship.

The next hearing in the case is currently scheduled for July 14. It is possible that Spears will submit a petition for the conservatorship to be terminated. In her comments to Judge Penny last week, Spears said that she had been unaware that she could take such an action. "I didn't know I could petition the conservatorship to end it," she said. "I'm sorry for my ignorance, but I honestly didn't know that."

Copyright 2021 NPR. To see more, visit https://www.npr.org.

This content is from Southern California Public Radio. View the original story at SCPR.org.




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Catawba County Budget Office wins national honor for 22nd consecutive year.

For the twenty-second straight year, Catawba County�s Budget Office has been recognized by its peers for producing a budget document which is easy to read and understand. The Office has won the 2010 Distinguished Budget Presentation Award from the Government Finance Officers Association. This award recognized the County�s fiscal year 2010-2011 budget.




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County budget staff wins national award for 23rd consecutive year.

Catawba County�s Budget Office has been recognized by its peers for producing a budget document which is easy to read and understand. The County Budget Office has won the 2011 Distinguished Budget Presentation Award from the Government Finance Officers Association (GFOA).




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Budget Office again wins national award, for producing budget document judged easy to read and understand.

Budget Office wins national award, for producing budget document judged easy to read and understand, for 25th straight year




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Some Pollinator Populations Declining - Improved Monitoring and More Biological Knowledge Needed to Better Assess Their Status

Long-term population trends for some North American pollinators -- bees, birds, bats, and other animals and insects that spread pollen so plant fertilization can occur -- are demonstrably downward, says a new report from the National Research Council.




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Transferable Knowledge and Skills Key to Success in Education and Work - Report Calls for Efforts to Incorporate Deeper Learning Into Curriculum

Educational and business leaders want todays students both to master school subjects and to excel in areas such as problem solving, critical thinking, and communication




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New Report Finds ‘Surprising Gaps’ in Knowledge of Ovarian Cancers

Ovarian cancer should not be categorized as a single disease, but rather as a constellation of different cancers involving the ovary, yet questions remain on how and where various ovarian cancers arise, says a new congressionally mandated report from the National Academies of Sciences, Engineering, and Medicine.




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New Report Identifies Three Critical Areas of Research to Fill Gaps in Scientific Knowledge of the Gulf Coasts Interconnected Natural and Human System

Improved understanding of the coupled natural-human coastal system will help promote resilience of coastal communities and ecosystems under rapidly changing environmental conditions and support informed decision-making, says a new report from the National Academies of Sciences, Engineering, and Medicine.




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Lessons from the Leading Edge

Early studies on COVID-19 hold lessons for any new area of science - approach with caution and stay open to change.




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Bridging Ghana and the Gulf - How One ECRF Fellow Is Tackling Urban Flooding

Communities must move from coping with floods to adapting for them. Kwame Owusu-Daaku, a former Gulf Research Program fellow, explains why living through floods in his native Ghana led him to Florida to help address the link between flooding and injustice.




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Small but mighty: Top 5 pocket-sized gadgets to boost your ethical hacking skills

These five formidable bits of kit that can assist cyber-defenders in spotting chinks in corporate armors and help hobbyist hackers deepen their understanding of cybersecurity




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Delhi HC issues notice to Telecom Department on accused judge's plea

Two former high court judges - SN Shukla of the Allahabad High Court and Quddusi of the Odisha High Court - have been charged by the CBI in the case. The agency had produced intercepted phone calls between the two judges as part of its charge sheet filed last July. It had also named other people in the alleged bribery scandal.




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Internet Archive's digital book lending violates copyrights, US judge rules

The ruling by U.S. District Judge John Koeltl in Manhattan on Friday came in a closely watched lawsuit that tested the ability of Internet Archive to lend out the works of writers and publishers protected by U.S. copyright laws.




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Patents need to be part of cutting-edge products: Rajaraman

“The task of coordinating, connecting and integrating all the work is what probably the Bharat 6G Alliance should do in enabling India's presence to be felt on the global telecommunications map,” Rajaraman said.




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Karnataka to be positioned as a knowledge capital for GCCs: Priyank Kharge

Priyank Kharge in his keynote at ET GCC Annual Conclave 2024 reiterates the purpose to establish Karnataka as a knowledge and skill capital topped with innovation and GCC policy for investments to follow.




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Security at Mahakumbh to feature advanced technology including AI: UP DGP

Prashant Kumar on Tuesday said the security arrangements at the Mahakumbh Mela will be equipped with advanced technology, including the use of Artificial Intelligence (AI). After a review meeting on preparations for the Mahakumbh Mela with Chief Secretary Manoj Kumar Singh, the DGP told reporters, "Our control room will have data of around 1 million suspicious individuals, and we will closely monitor all types of anti-social elements."




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Microsoft announces AI-powered shopping tools in Bing, Edge

The new tools help users to harness the power of AI "to make it easier to discover, research, and complete your purchase, all in one place with information you need from expert sources," the tech giant said in a blogpost on Thursday.




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Microsoft announces AI-powered shopping tools in Bing, Edge

The new tools help users to harness the power of AI "to make it easier to discover, research, and complete your purchase, all in one place with information you need from expert sources," the tech giant said in a blogpost on Thursday.




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CERT-In finds multiple bugs in Microsoft Edge, advises users to update

"Multiple vulnerabilities have been reported in Microsoft Edge (chromium-based) which could allow the remote attacker to cause a denial of service condition, remote code execution, sensitive information disclosure and security restriction bypass on the targeted system," said the CERT-In advisory.




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103: A New Widgety World

Grey wants to know what's going on, Myke is changing things up, and they both talk about WWDC 2020.




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Recent challenges provide opportunity for bakery delivery fleets to expand knowledge

If there’s one thing the last few months have shown us, it’s that business-as-usual can be uprooted without warning.




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Pepperidge Farm Pumpkin Spice products return

The brand is bringing its Milano Pumpkin Spice Cookies and Pepperidge Farm Pumpkin Spice Swirl Bread back to shelves this fall.




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ADM releases HarvestEdge Oro flour for pizza

The introduction of HarvestEdge Oro comes as the pizza market continues to expand, with the line helping operators tap into new areas.




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Bridging the gluten-free gap

When the gluten-free craze hit in 2004, I was already several years into my career as a food industry writer, with stints under my belt covering agriculture, food ingredient R&D, and restaurant menu development




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Pepperidge Farm introduces stuffing-seasoned rolls

Starting this fall, Pepperidge Farm is combining stuffing and rolls to elevate the holidays in its new Farmhouse Stuffing Seasoned Rolls.




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On the Cutting Edge

Looks are deceiving at Gabby’s Bagels. The “small” artisan bakery may first appear unassuming, but it has plenty of big programs that keep it ahead of the competition and regulations.




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Pepperidge Farm to debut Thin & Crispy Peppermint Cocoa cookies

The product consists of a chocolate cookie dotted with crisp peppermint chips throughout.




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Tastykake debuts Sonic the Hedgehog 2 collaboration

Tastykake has teamed up with Sonic the Hedgehog 2 to unveil all-new packaging.




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Hostess Brands joins children's food and beverage advertising initiative with pledge to not advertise to children

Company commits to not engage in advertising primarily directed to children under age 13.




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Shurtape tape monitoring system and folded-edge hand dispenser

The Folded-Edge Hand Dispenser is one of the latest additions to Shurtape’s ShurSEAL Packaging Solutions family and is available for all manual sealing applications, including L-Clip tape sealing.




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Wildgrain to launch Gluten-Free Box

Wildgrain partners with local artisanal bakers to bring fresh sourdough breads, pastries, and pastas directly to consumers' doors.




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Tool Tips: Dislodging wood plugs from hole saw

Tool Tips—January 2019




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RIDGID announces K9-12 FlexShaft Drain Cleaning Machine

Clearing up to 30 feet of 1 1/4- to 2” pipe, the K9-12 breaks up grease, hair and other soft blockages, making it ideal for kitchen and bath sinks, as well as tubs and shower drains.




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PM Profile: Schedule Engine bridges the technology gap for plumbing contractors

Founded in 2017, Schedule Engine is a customer service support solution for home service contractors.




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Cogeneration puts New York college on the leading edge of sustainability

Finger Lakes Community College (FLCC) has served upstate New York for more than 50 years.