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Articles by Andrew Weitz
Digitally delivered, systemically challenged: A qualitative study of health system readiness for digital care
Loading metrics Open Access Peer-reviewed Research Article Citation: O’Connor L, Dunkel L, Weitz AC, Walkey A, Lindenauer PK, Soni A (2026) Digitally delivered, systemically challenged: A qualitative study of health system readiness for digital care. PLOS Digit Health 5(1): e0001193.
Hobbits of Flores May Have Stayed Small by Slowing Down Childhood Growth, Scientists Say
Until Homo floresiensis was discovered, scientists assumed that the evolution of the human lineage was defined by bigger and bigger brains. Via a process called encephalization, human brains evolved to be relatively more massive than would be expected based on corresponding body size. This proportionally bigger brain is what anthropologists argued enabled us and our relatives to perform more complex tasks such as using fire, forging and wielding tools, making art and domesticating animals.
Scientists Finally Reveal Why 'Hobbits' Were So Small
Until Homo floresiensis was discovered, scientists assumed that the evolution of the human lineage was defined by bigger and bigger brains. Via a process called encephalization, human brains evolved to be relatively more massive than would be expected based on corresponding body size. This proportionally bigger brain is what anthropologists argued enabled us and our relatives to perform more complex tasks such as using fire, forging and wielding tools, making art and domesticating animals.
Hobbits of Flores evolved to be small by slowing down growth during childhood, new research on teeth and brain size suggests Original
Until Homo floresiensis was discovered, scientists assumed that the evolution of the human lineage was defined by bigger and bigger brains. Via a process called encephalization, human brains evolved to be relatively more massive than would be expected based on corresponding body size. This proportionally bigger brain is what anthropologists argued enabled us and our relatives to perform more complex tasks such as using fire, forging and wielding tools, making art and domesticating animals.
Hobbits of Flores evolved to be small by slowing down growth during childhood, new research on teeth and brain size suggests
Until Homo floresiensis was discovered, scientists assumed that the evolution of the human lineage was defined by bigger and bigger brains. Via a process called encephalization, human brains evolved to be relatively more massive than would be expected based on corresponding body size.
the Smart Spreadsheet
The Smart Spreadsheet is the spreadsheet you've always wished you had - it fills itself out. Watch the full demo here. Most professionals, regardless of their field or expertise, have at one point had to conduct some sort of online-based research. Typically, they collect this information into a spreadsheet-like interface to easily compare items and share with others.
An S=1 Iron(IV) Intermediate Revealed in a Non‐Heme Iron Enzyme‐Catalyzed Oxidative C−S Bond Formation
Introduction Ergothioneine (ESH, 5, Scheme 1) and ovothiol A (OSHA, 8, Scheme 1) are naturally-occurring thiol-histidine derivatives.
Health Departments Share Successes and Barriers to Implementing a Community-focused, Free, At-home COVID-19 Testing Program
State and local health departments, serving on the front lines of their communities, provide a unique and important perspective to public health response activities. In our article, “Experiences of Health Departments on Community Engagement and Implementation of a COVID-19 Self-testing Program,” we captured important insights from health departments on community engagement and outreach during a public health program.
How to cheat your way to great ML model performance
Knowledge distillation is the concept of extracting knowledge from one model and transferring it to another. This has traditionally been done via labels, but, as shown in our work and others [ 1, 2], can also be done via generated data. We believe knowledge distillation will be increasingly important for the future of AI. Here's why: 1. Foundation models will continue to get more powerful and semantically meaningful. There is an arms race underway (OpenAI vs. Stability AI vs. Anthropic vs.
SEC Adopts Final Rules for Share Repurchase Disclosure | JD Supra
On May 3, 2023, the Securities and Exchange Commission (SEC) adopted final rules that significantly increase issuers’ disclosure obligations by requiring more detailed periodic disclosure about repurchases and issuer trading plans.
SEC Adopts Final Rules for Share Repurchase Disclosure [Alert]
On May 3, 2023, the Securities and Exchange Commission (SEC) adopted final rules that significantly increase issuers’ disclosure obligations by requiring more detailed periodic disclosure about repurchases and issuer trading plans.
OvoAMtht from Methyloversatilis thermotolerans ovothiol biosynthesis is a bifunction enzyme: cysteine dioxygenase and sulfoxide synthase activities
OvoAMtht from Methyloversatilis thermotolerans ovothiol biosynthesis is a bifunction enzyme: cysteine dioxygenase and sulfoxide synthase activities Ronghai Cheng, Andrew Weitz, Jared Paris, Yijie Tang, Jingyu Zhang, Heng Song, Nathchar Naowarojna, Kelin Li, Lu Qiao, Juan Lopez, Mark W Grinstaff, Li Xin Zhang, Yisong Guo, Sean Elliott and Pinghua Liu Abstract Mononuclear non-heme iron enzymes are a large class of enzymes catalyzing a wide-range of reactions.
A Stable Ferryl Porphyrin at the Active Site of Y463M BthA
Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Am. Chem. Soc. 2020, XXXX, XXX Kimberly Rizzolo, Andrew C. Weitz Andrew C. Weitz Boston University, Department of Chemistry, Boston, Massachusetts 02215, United States Carnegie Mellon University, Department of Chemistry, Pittsburgh, Pennsylvania 15213, United States , Steven E. Cohen, Catherine L. Drennan Catherine L.
Effects of Noncovalent Interactions on High-Spin Fe(IV)-Oxido Complexes
High-valent nonheme FeIV–oxido species are key intermediates in biological oxidation, and their properties are proposed to be influenced by the unique microenvironments present in protein active sites. Microenvironments are regulated by noncovalent interactions, such as hydrogen bonds (H-bonds) and electrostatic interactions; however, there is little quantitative information about how these interactions affect crucial properties of high valent metal–oxido complexes.
Thalamic Input to Orbitofrontal Cortex Drives Brain-wide, Frequency-Dependent Inhibition Mediated by GABA and Zona Incerta
Airaksinen A.M. Hekmatyar S.K. Jerome N. Niskanen J.P. Huttunen J.K. Pitkänen A. Kauppinen R.A. Gröhn O.H. Simultaneous BOLD fMRI and local field potential measurements during kainic acid-induced seizures. Epilepsia. 2012; 53: 1245-1253 Alcaraz F. Marchand A.R. Vidal E. Guillou A. Faugère A. Coutureau E. Wolff M. Flexible use of predictive cues beyond the orbitofrontal cortex: role of the submedius thalamic nucleus. J. Neurosci. 2015; 35: 13183-13193 Ashburner J. Barnes G. Chen C. Daunizeau J. Flandin G.
Controlling Magnetism of Au133(TBBT)52 Nanoclusters at Single Electron Level and Implication for Nonmetal to Metal Transition
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Probing Hydrogen Bonding Interactions to Iron‐Oxido/Hydroxido Units by 57Fe Nuclear Resonance Vibrational Spectroscopy
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FIRRMA Significantly Expands CFIUS Review of Foreign Investment in the United States: Mandatory Filing Requirements - Critical Technologies Pilot Program | Cohen & Grigsby, P.C - JDSupra
JD Supra is a legal publishing service that connects experts and their content with broader audiences of professionals, journalists and associations. This Privacy Policy describes how JD Supra, LLC ("JD Supra" or "we," "us," or "our") collects, uses and shares personal data collected from visitors to our website (located at www.jdsupra.com) (our "Website") who view only publicly-available content as well as subscribers to our services (such as our email digests or author tools)(our "Services").
Probing hydrogen bonding interactions to iron‐oxido/hydroxido units via 57Fe nuclear resonance vibrational spectroscopy
As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re‐organized for online delivery, but are not copy‐edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors.
Probing hydrogen bonding interactions to iron‐oxido/hydroxido units via 57Fe nuclear resonance vibrational spectroscopy
As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re‐organized for online delivery, but are not copy‐edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors.
Why Hollywood Men Should Consider Bespoke Everything
"Bespoke" can refer to anything from suits to websites to bikes to shoes. The word comes from "bespeak," which means to speak for something. If I'm making a custom suit, I'm speaking for me, for who I am, for what my business is. But it's not showing off — that's not it. When you're ordering something to be made the way you want it, you're speaking to the world. With bespoke, you start from scratch. You're building a garment with the experience and guidance of the person making it for you.
Mononuclear Complexes of a Tridentate Redox-Active Ligand with Sulfonamido Groups: Structure, Properties, and Reactivity
The design of molecular complexes of earth-abundant first-row transition metals that can catalyze multi-electron C–H bond activation processes is of interest for achieving efficient, low-cost syntheses of target molecules. To overcome the propensity of these metals to perform single-electron processes, redox-active ligands have been utilized to provide additional electron equivalents.
Models for Unsymmetrical Active Sites in Metalloproteins: Structural, Redox, and Magnetic Properties of Bimetallic Complexes with MII-(μ-OH)-FeIII Cores
Bimetallic complexes are important sites in metalloproteins but are often difficult to prepare synthetically. We have previously introduced an approach to form discrete bimetallic complexes with MII-(μ-OH)-FeIII (MII = Mn, Fe) cores using the tripodal ligand N,N′,N″-[2,2′,2″-nitrilotris(ethane-2,1-diyl)]tris(2,4,6-trimethylbenzenesulfonamido) ([MST]3–). This series is extended to include the rest of the late 3d transition metal ions (MII = Co, Ni, Cu, Zn).
Spectroscopy and DFT Calculations of a Flavo-diiron Enzyme Implicate New Diiron Site Structures
Flavo-diiron proteins (FDPs) are non-heme iron containing enzymes that are widespread in anaerobic bacteria, archaea, and protozoa, serving as the terminal components to dioxygen and nitric oxide reductive scavenging pathways in these organisms. FDPs contain a dinuclear iron active site similar to that in hemerythrin, ribonucleotide reductase, and methane monooxygenase, all of which can bind NO and O . However, only FDP competently turns over NO to N O.
NaClO-Generated Iron(IV)oxo and Iron(V)oxo TAMLs in Pure Water
The unique properties of entirely aliphatic TAML activator [FeIII{(Me CNCOCMe NCO) CMe }OH ]? (3), namely the increased steric bulk of the ligand and the unmatched resistance to the acid-induced demetalation, enables the generation of high-valent iron derivatives in pure water at any pH. An iron(V)oxo species is readily produced with NaClO at pH values from 2 to 10.6 without any observable intermediate. This is the first reported example of iron(V)oxo formed in pure water.
Reactivity of an FeIV-Oxo Complex with Protons and Oxidants
High-valent Fe-OH species are often invoked as key intermediates but have only been observed in Compound II of cytochrome P450s. To further address the properties of non-heme FeIV-OH complexes, we demonstrate the reversible protonation of a synthetic FeIV-oxo species containing a tris-urea tripodal ligand. The same protonated FeIV-oxo species can be prepared via oxidation, suggesting that a putative FeV-oxo species was initially generated.
Modular Artificial Cupredoxins
Cupredoxins are electron-transfer proteins that have active sites containing a mononuclear Cu center with an unusual trigonal monopyramidal structure (Type 1 Cu). A single Cu–S bond is present within the trigonal plane that is responsible for its unique physical properties. We demonstrate that a cysteine-containing variant of streptavidin (Sav) can serve as a protein host to model the structure and properties of Type 1 Cu sites.
Activation of Direct and Indirect Pathway Medium Spiny Neurons Drives Distinct Brain-wide Responses
Figure 1Combining Optogenetic Control of D1- and D2-MSNs with Simultaneous fMRI Readouts Reveals Robust Distinct Activity throughout the Brain(A) Representative histology of ChR2-EYFP co-labeled with DARPP32 (top) or dynorphin (bottom) in D1-Cre mice. Arrows indicate cells co-expressing ChR2-EYFP and the stained antibody. Arrowheads indicate ChR2-EYFP-negative cells expressing the stained antibody.(B) Quantification of ChR2 and antibody co-localization in D1-Cre mice.
Is Your Watch Too Fat? Sizing Up Hollywood's Latest Timepiece Trend (Guest Column)
This story first appeared in the May 8 issue of The Hollywood Reporter magazine. To receive the magazine, click here to subscribe. Over a decade ago, I noticed a male colleague of mine at Endeavor (now WME) wearing a 44mm diameter Audemars Piguet. Then it seemed everyone -- friends, associates, athletes and celebrities -- was sporting large-faced timepieces. The look was flashy, confident and an uber-masculine way to signal status and spending power.
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