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Ultrafast synthesis of gold nanoparticles on cellulose nanocrystals via microwave irradiation and their dyes-degradation catalytic activity

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Journal of Materials Science & Technology 2020年第6期41卷 168-177页

作者： Madhusudhan alle Seung-Hwan Lee Jin-Chul Kim Institute of Forest Science Kangwon National UniversityChuncheon 24341Republic of Korea Department of Forest Biomaterials Engineering Kangwon National UniversityChuncheon 24341Republic of Korea Department of Medical Biomaterials Engineering College of Biomedical Science and Institute of Bioscience and BiotechnologyKangwon National University192-1Hyoja 2 dongChuncheonKangwon-do 200-701Republic of Korea

This study represents a well-dispersed gold nanoparticles(AuNPs)synthesis process via cellulose nanocrystals(CNC)which acts as both reducing and supporting *** synthesis process was ultrafast and completed in a few seconds using microwave *** entire synthesis process was cost-effective,sustainable and *** synthesized(AuNPs/CNC)nanocomposite was investigated by transmission electron microscopy,selected area electron diffraction,Fourier transform infrared spectroscopy,energy dispersive X-ray analysis,X-ray diffraction,and UV–vis *** obtained AuNPs were well accumulated on the CNC surface and had a uniform spherical shape with an average diameter of 8±5.3 *** diameter of AuNPs could be altered by tuning the concentration of CNC *** synthesized AuNPs/CNC nanocomposite film exhibited excellent degradation properties against various organic dyes,namely,Allura red,Congo red,Rhodamine B and *** ultrafast degradation reactions followed pseudo first order *** the catalytic degradation reaction,AuNPs/CNC was transmitting electrons from a donor(NaBH4)to an acceptor(a dye).

关键词： Cellulose nanocrystals Gold nanoparticles Microwave synthesis Catalytic degradation of dyes

Beating the blues:engineering cryptochrome expression improves soybean yield

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Molecular Plant 2021年第2期14卷 202-204页

作者： ronald Pierik Plant Ecophysiology Department of BiologyUtrecht UniversityPadualaan 83584 CH Utrechtthe Netherlands

Phytochrome A overexpression can increase harvest index,as was shown 25 years ago in a breakthrough paper on tobacco(Robson et al.,1996).The impact of this important discovery has,however,not been fully *** at high densities often respond strongly to nearby competitors by strong elongation of their internodes and upward bending of their leaves,i.e.,shade *** is crucial for plants to ascertain access to sunlight,and this navigation through vegetation occurs through light cues that are sensed with various photoreceptors.A spectacular sensitivity is displayed by sun-loving plants that can already sense their nearby competitors even before mutual shading occurs and respond through a first acceleration of shoot *** anticipatory response is triggered through red(R):far-red(FR)light-sensitive phytochrome photoreceptors that detect FR light that is reflected by nearby *** the vegetation continues to grow and true shading occurs,there is also a significant depletion of red and blue light,since the latter two are absorbed for photosynthesis in the overhead leaves(reviewed in Pierik and Ballaré,2021).Plants can respond to blue light depletion,especially when integrating it with signaling of FR enrichment in Arabidopsis(de Wit et al.,2016).

关键词： depletion soybean breakthrough

Geometric morphometric analysis of the early Pleistocene hominin teeth from Jianshi,Hubei Province,China

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Science China Earth Sciences 2010年第8期53卷 1141-1152页

作者： ronald CLARKE University of the Witwatersrand JohannesburgSouth Africa

Although the early Pleistocene hominin fossils found in East Asia continent are widely recognized as the earliest hominins migrated from Africa, debates remain on the morphology and taxonomy of these fossils. In this study, dental crown shape of the three early Pleistocene hominin teeth (P3, M1, and M1) found in Jianshi, Hubei Province of China was analyzed by means of geometric morphometrics. The comparative samples of fossil hominins from Africa, Asia, and Europe as well as those of modern humans (N=257) were used. The results indicate that the contour, asymmetry, and cusp patterns of these three types of teeth differ obviously between the fossil hominins and modern humans. The crown shape of P3 in most fossil hominins including Australopithecus, African early Homo, and Asian Pleistocene hominins are asymmetric with their crown occlusal contours long and curving elliptic-shaped. The occlusal contour of the fossil hominin M1 is symmetric and rectangle-shaped with no marked cusp protrusion. The crown shape of fossil M1 is characterized by asymmetric contour with slightly projected metaconid and hypoconid. On the contrary, in modern Chinese and some European late Pleistocene hominins, the crowns of P3s show symmetric contours with buccal side wider than lingual side; the crown shape of M1 is asymmetric with lingual cusp distalplaced, especially for hypoconid; the M1 has symmetric and round crown contour. Our study reveals that Australopithecus has wide variations in its crown shape, whereas these dental morphospaces of Asian hominins are closely placed. The crown contour, symmetry, and cusp patterns of these three teeth of Jianshi hominin resemble those of Asian early and middle Pleistocene hominins. No marked difference in dental crown shape is shown between the Jianshi hominin and other Chinese Homo erectus, and there is also no evidence in support of the Jianshi hominin's closeness to Australopithecus and African early Homo members.

关键词： human evolution tooth shape geometric morphometric Jianshi Hubei China

Artificial enzymes,cancer chemotherapy,conjugation and nanoelectronics,and prebiotic chemistry

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Science China Chemistry 2011年第12期54卷 1803-1814页

作者： BRESLOW ronald Department of Chemistry Columbia University

This is a summary,with extensive references,of several areas of chemistry in which the Breslow lab has been involved,leading to work still underway in several of *** principal conclusions are described,but it will be ... 详细信息

关键词： artificial enzymes cancer chemotherapy conjugation and nanoelectronics prebiotic chemistry

Epidemiology of Sexual dysfunction in Asia compared to the rest of the world

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Asian Journal of Andrology 2011年第1期13卷 152-158页

作者： ronald W Lewis Section of Urology Medical College of Georgia Augusta GA 30912 USA

There have been a limited number of epidemiological studies published on sexual disorders in persons from Asia. This paper aims to assess the reports of sexual dysfunction epidemiological studies published in the English language that involved Asian countries. Key points are summarized in this paper from nine epidemiological papers on sexual dysfunction from Asia that were published in the English language. Seven met the criteria for evidence-based studies reaching a Prins score of at least 10 or more. Papers included in this report came from national and regional representative studies in peer review journals. These results for sexual dysfunction in the nine papers are summarized for various sexual dysfunctions in men and women in Asian countries. In three of these, worldwide data were presented in the same paper allowing comparisons with Asian data on prevalence rates. Detailed descriptions from each of these studies are presented in paragraph form. More detailed data on erectile dysfunction （ED） is presented in a tabular form. Collectively, there seems to be a need for country- and population-specific further descriptive and analytical epidemiological studies in all of the sexual disorders from Asia. This critical review paper should help guide these studies for reachinj[ evidence-based literature standards.

关键词： descriptive epidemiology male and female dysfunction male ED premature ejaculation

Coronary artery disease and heart failure:Late-breaking trials presented at American Heart Association scientific session 2023

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World Journal of Cardiology 2024年第7期16卷 389-396页

作者： Avilash Mondal Sashwath Srikanth Sanjana Aggarwal Naga R alle Olufemi Odugbemi Ikechukwu Ogbu Rupak Desai Department of Internal Medicine Nazareth HospitalPhiladelphiaPA 19152United States Department of Internal Medicine East Carolina University GreenvilleGreenvilleNC 27834United States Department of Internal Medicine Hamdard Institute of Medical Sciences and ResearchNew Delhi 110062India Department of Medicine Narayana Medical CollegeNelloreAndhra Pradesh 524003India Department of Internal Medicine Lincoln Medical CenterBronxNY 10451United States Department of Internal Medicine Mountainview Hospital Sunrise GMELas VegasNV 89108United States Independent Researcher AtlantaGA 30079United States

The late-breaking science presented at the 2023 scientific session of the American Heart Association paves the way for future pragmatic trials and provides meaningful information to guide management strategies in coronary artery disease and heart failure(HF).The dapagliflozin in patient with acute myocardial infarction(DAPA-MI)trial showed that dapagliflozin use among patients with acute MI without a history of diabetes mellitus or chronic HF has better cardiometabolic outcomes compared with placebo,with no difference in cardiovascular *** MINT trial showed that in patients with acute MI and anemia(Hgb<10 g/dL),a liberal transfusion goal(Hgb≥10 g/dL)was not superior to a restrictive strategy(Hgb 7-8 g/dL)with respect to 30-day all-cause death and recurrent *** ORBITA-2 trial showed that among patients with stable angina and coronary stenoses causing ischemia on little or no antianginal therapy,percutaneous coronary intervention results in greater improvements in anginal frequency and exercise times compared with a sham *** ARIES-HM3 trial showed that in patients with advanced HF who received a HeartMate 3 levitated left ventricular assist device and were anticoagulated with a vitamin K antagonist,placebo was noninferior to daily aspirin with respect to the composite endpoint of bleeding and thrombotic events at 1 *** TEAMMATE trial showed that everolimus with low-dose tacrolimus is safe in children and young adults when given≥6 months after cardiac *** patients being treated for HF with reduced ejection fraction(HFrEF)with specific out-of-pocket(OOP)costs for multiple medication options at the time of the clinical encounter may reduce‘contingency planning’and increase the extent to which patients are taking the medications decided *** primary outcome,which was cost-informed decisionmaking,defined as the clinician or patient mentioning costs of HFrEF medication,occurred in 49%of encounters with the checklist only

关键词： Heart failure Coronary artery disease Clinical trials Myocardial infarction Cardiovascular outcome Percutaneous coronary intervention Blood transfusion Cardiac transplant

Delayed recognition:recent developments and a proposal to study this phenomenon as a fuzzy concept

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Journal of Data and Information Science 2018年第3期3卷 1-13页

作者： ronald Rousseau University of Antwerp Faculty of Social SciencesB-2020 AntwerpBelgium d KU LeuvenFacultair Onderzoekscentrum ECOOM

Purpose:New developments in the study of delayed recognition are ***/methodology/approach:Based on these new developments a method is proposed to characterize delayed recognition as a fuzzy ***:A benchmark value of 0.333 corresponding with linear growth is ***,a case is discovered in which an expert found delayed recognition several years before citation analysis could discover this *** limitations:As all citation studies also this one is database *** implications:Delayed recognition is turned into a fuzzy ***/value:The article presents a new way of studying delayed recognition.

关键词： Delayed recognition Sleeping beauty Hibernators Fuzzy membership function

From dolphins to dogs:new opportunities to understand the role of P2X4 receptors in spinal cord injury and neuropathic pain

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Neural Regeneration Research 2023年第7期18卷 1497-1498页

作者： Reece A.Sophocleous ronald Sluyter Illawarra Health and Medical Research Institute WollongongNSWAustralia Molecular Horizons and School of Chemistry and Molecular Bioscience University of WollongongWollongongNSWAustralia

The P2X4 receptor belongs to the P2X receptor family of trimeric ligand-gated ion channels and was the first member of this family for which a crystal structure was obtained(Kawate et al.,2009).This structure confirmed the trimeric stoichiometry of P2X receptors and subsequent studies from the same group revealed the orthosteric binding site of the natural ligand adenosine 5′-triphosphate(ATP)in a cleft between each adjacent subunit(Hattori and Gouaux,2012).Now synonymous with structural descriptions of P2X receptors,these original studies described the structure of each P2X4 receptor subunit as that resembling a dolphin.

关键词： P2X4 subsequent

The F-measure for Research Priority

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Journal of Data and Information Science 2018年第1期3卷 1-17页

作者： ronald Rousseau University of Antwerp Faculty of Social SciencesB-2020 Antwerp Belgium&KU Leuven Facultair Onderzoekscentrum ECOOMNaamsestraat 61Leuven B-3000Belgium

Purpose： In this contribution we continue our investigations related to the activity index （A/） and its formal analogs. We try to replace the AI by an indicator which is better suited for policy applications. Design/methodology/approach： We point out that fluctuations in the value of the AI for a given country and domain are never the result of that country＇s policy with respect to that domain alone because there are exogenous factors at play. For this reason we introduce the F-measure. This F-measure is nothing but the harmonic mean of the country＇s share in the world＇s publication output in the given domain and the given domain＇s share in the country＇s publication ***： The F-measure does not suffer from the problems the AI does Research limitations： The indicator is not yet fully tested in real cases R＆D policy management： In policy considerations, the AI should better be replaced by the F-measure as this measure can better show the results of science policy measures （which the AI cannot as it depends on exogenous factors）. Originality/value： We provide an original solution for a problem that is not fully realized by policy makers.

关键词： Keywords Activity index Harmonic mean F-measure Research policy Endogenous andexogenous factors