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The (e_(g)■e_(u))■E_(g) product Jahn-Teller effect in the neutral group-Ⅳ vacancy quantum bits in diamond

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npj Computational materials 2019年第1期5卷 1002-1007页

作者： GergőThiering adam Gali Wigner Research Centre for Physics Hungarian Academy of SciencesPO Box 49Budapest 1525Hungary Department of Atomic Physics Budapest University of Technology and EconomicsBudafokiút 8.Budapest 1111Hungary

The product Jahn-Teller effect may occur for such coupled electron-phonon systems in solids where single electrons occupy double degenerate *** propose that the excited state of the neutral XV split-vacancy complex in diamond,where X and V labels a group-Ⅳ impurity atom of X=Si,Ge,Sn,Pb and the vacancy,respectively,is such a system with e_(g) and e_(u) double degenerate orbitals and E_(g) quasi-localized *** develop and apply ab initio theory to quantify the strength of electron–phonon coupling for neutral XV complexes in diamond,and find a significant impact on the corresponding optical properties of these *** results show good agreement with recent experimental data on the prospective SiV(0)quantum bit,and reveals the complex nature of the excited states of neutral XV color centers in diamond.

关键词： neutral vacancy quantum

Advancing healthcare through laboratory on a chip technology:Transforming microorganism identification and diagnostics

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World Journal of Clinical Cases 2025年第3期13卷 9-19页

作者： Carlos m Ardila Department of Basic Sciences Biomedical Stomatology Research GroupUniversidad de Antioquia U de AMedellín 0057Colombia

In a recent case report in the World Journal of Clinical Cases,emphasized the crucial role of rapidly and accurately identifying pathogens to optimize patient treatment ***-on-a-chip(LOC)technology has emerged as a transformative tool in health care,offering rapid,sensitive,and specific identification of *** editorial provides a comprehensive overview of LOC technology,highlighting its principles,advantages,applications,challenges,and future *** studies from the field have demonstrated the practical benefits of LOC devices in clinical diagnostics,epidemiology,and food *** studies have underscored the superiority of LOC technology over traditional methods,showcasing improvements in speed,accuracy,and *** future integration of LOC with biosensors,artificial intelligence,and data analytics promises further innovation and *** call to action emphasizes the importance of continued research,investment,and adoption to realize the full potential of LOC technology in improving healthcare outcomes worldwide.

关键词： Laboratory-on-a-chip microorganism identification Diagnostics Point-ofcare testing Biosensors

Determination of optimum tapping date for gum arabic production in South Kordofan State, Sudan

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Journal of Forestry Research 2011年第4期22卷 685-688页

作者： Idris musa adam Kamal E.m. Fadl Agricultural Research Corporation Kadugli Research Station P.O. Box 10 Kadugli Sudan Agricultural Research Corporation El-Obeid Research Station P.O. Box 429 El-Obeid Sudan.

Acacia senegal, the gum arabic producing tree, is the most important tree species for the livelihood of the people in South Kordofan State, Sudan. The objective of this study was to determine the optimum tapping date for gum arabic production in the study area. A randomized complete block design experiment with three replications was conducted at （mead） area for two continuous growing seasons 2008/2009 - 2009/2010. The treatments comprised six tapping dates （1 Oct, 15 Oct, 1 Nov, 15 Nov, 1 Dec, and 15 Dec）. Results ishowed highly significant differences （p 〈 0.001） in gum arabic yield （g／tree） in all pickings and in the total gum yield between the tapping dates. The results also showed that tapping of trees on 15 October and 1 November gave a higher yield compared to the other dates. The highest gum yield of 1086.6 and 661.2 g/tree was recorded on 15 October and 15 November, while the lowest gum yield of 297.9 g/tree was recorded when the trees were tapped on 1 October. The two highest-yield dates of tapping （15 Oct and 1 Nov） are recommended as the best time for tapping for gum arabic production in South Kordofan State. These results can be used to increase gum arabic production and farmer income in South Kordofan State.

关键词： gum Arabic date of tapping agroforestry system SouthKordofan Sudan

Towards standardizing retinal optical coherence tomography angiography:a review

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Light(Science & Applications) 2022年第4期11卷 520-541页

作者： Danuta m.Sampson adam m.Dubis Fred K.Chen Robert J.Zawadzki David D.Sampson Surrey Biophotonics Centre for VisionSpeech and Signal Processing and School of Biosciences and MedicineThe University of SurreyGuildford GU27XHUK NIHR Biomedical Research Centre at moorflelds Eye Hospital NHS Trust and UCL Institute of Ophthalmology London EC1V 2PDUK. Centre for Ophthalmology and Visual Science(incorporating Lions Eye Institute) The University of Western AustraliaNedlandsWestern Australia 6009Australia. Department of Ophthalmology Royal Perth HospitalPerthWestern Australia 6000Australia. Ophthalmology Department of SurgeryUniversity of MelbourneMelbourneVictoria 3002Australia. Department of Ophthalmology&Vision Science University of California DavisSacramentoCA 95817USA. Surrey Biophotonics Advanced Technology InstituteSchool of Physics and School of Biosciences and MedicineUniversity of SurreyGuildfordSurrey GU27XHUK

The visualization and assessment of retinal microvasculature are important in the study,diagnosis,monitoring,and guidance of treatment of ocular and systemic *** the introduction of optical coherence tomography angiography(OCTA),it has become possible to visualize the retinal microvasculature volumetrically and without a contrast *** lab-based and commercial clinical instruments,imaging protocols and data analysis methods and metrics,have been applied,often inconsistently,resulting in a confusing picture that represents a major barrier to progress in applying OCTA to reduce the burden of *** data and software sharing,and cross-comparison and pooling of data from different studies are *** inabilities have impeded building the large databases of annotated OCTA images of healthy and diseased retinas that are necessary to study and define characteristics of specific *** paper addresses the steps needed to standardize OCTA imaging of the human retina to address these *** review of the OCTA literature,we identify issues and inconsistencies and propose minimum standards for imaging protocols,data analysis methods,metrics,reporting of findings,and clinical practice and,where this is not possible,we identify areas that require further *** hope that this paper will encourage the unification of imaging protocols in OCTA,promote transparency in the process of data collection,analysis,and reporting,and facilitate increasing the impact of OCTA on retinal healthcare delivery and life science investigations.

关键词： transparency steps inconsistent

Endoscopic ultrasound-guided drainage of peripancreatic fluid collections: What impacts treatment duration?

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Hepatobiliary & Pancreatic Diseases International 2023年第3期22卷 310-316页

作者： adam Przybyłkowski Piotr Nehring Department of Gastroenterology and Internal medicine Medical University of WarsawWarsawPoland

Background:Peripancreatic fluid collections(PFCs)are complications resulting from acute or chronic pancreatitis and require treatment in certain clinical *** present study aimed to identify the factors influencing the duration of endoscopic ultrasound(EUS)-guided drainage of symptomatic pancreatic pseudocysts(PPCs),walled-off necrosis(WON),and acute necrotic collections(ANCs).methods:This was a retrospective cohort study of 68 patients with PFCs who underwent EUS-guided *** timing and duration of EUS-guided drainage of various PFCs(ANC,WON,and PPCs)were compared,and the factors influencing the duration of endoscopic treatment were ***:The mean time to first EUS-guided PFC drainage since the acute pancreatitis episode was 372.0,505.0,and 18.7 days for WON,PPC,and ANC,respectively,and the mean duration of treatment was 90,60,and 63 days,respectively.A disconnected pancreatic duct,a history of percutaneous drainage,and an infected PFC were identified as factors influencing the treatment duration.A positive correlation was observed between the treatment duration and patients’*** with a disconnected pancreatic duct had to undergo more *** patients with PPC,clinically successful drainage was more frequently achieved after a single procedure without the need for repeated procedures than in those with WON(90%vs.59%,P=0.01).Conclusions:Patients with a history of percutaneous drainage,disconnected pancreatic duct,or PFC infection may require longer endoscopic treatment.

关键词： Cyst Drainage Endoscopy Pancreas Pancreatitis

Impact of Zika virus non-structural protein mutations on hippocampal damage

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Neural Regeneration Research 2025年第8期20卷 2307-2308页

作者： Larissa m.G.Cassiano Roney S.Coimbra Neurogenômica/Imunopatologia Instituto RenéRachouFiocruzBelo HorizonteBrazil Departamento de Bioquímica e Imunologia Instituto de Ciências BiológicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil

The Zika virus(ZIKV),a member of the Flaviviridae family,attracted worldwide attention for its connection to severe neurological effects,notably microcephaly in newborns,first reported during the 2015 epidemic in ***,its impact goes beyond fetal and neonatal abnormalities,also affecting the central nervous system(CNS)in both children and adults,leading to enduring cognitive and behavioral impairments.

关键词： damage fetal neonatal

Finding stable multi-component materials by combining cluster expansion and crystal structure predictions

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npj Computational materials 2023年第1期9卷 2137-2146页

作者： adam Carlsson Johanna Rosen martin Dahlqvist materials Design Department of PhysicsChemistryand Biology(IFM)Linköping UniversitySE-58183 LinköpingSweden

A desired prerequisite when performing a quantum mechanical calculation is to have an initial idea of the atomic positions within an approximate crystal *** atomic positions combined should result in a system located in,or close to,an energy ***,designing low-energy structures may be a challenging task when prior knowledge is scarce,specifically for large multi-component systems where the degrees of freedom are close to *** this paper,we propose a method for identification of low-energy crystal structures within multi-component systems by combining cluster expansion and crystal structure predictions with density-functional theory *** structure prediction searches are applied to the mo_(2)AlB_(2) and Sc2AlB_(2) ternary systems to identify candidate structures,which are subsequently used to explore the quaternary(pseudo-binary)(mo_(x)Sc_(1–x))2AlB_(2) system through the cluster expansion formalism utilizing the ground-state search ***,we show that utilizing low-energy structures found within the cluster expansion ground-state search as seed structures within crystal structure predictions of(mo_(x)Sc_(1–x))2AlB_(2) can significantly reduce the computational *** this combined approach,we not only correctly identified the recently discovered mo_(4/3)Sc_(2/3)AlB_(2) i-mAB phase,comprised of in-plane chemical ordering of mo and Sc and with Al in a Kagomélattice,but also predict additional low-energy structures at various *** result demonstrates that combining crystal structure prediction with cluster expansion provides a path for identifying low-energy crystal structures in multi-component systems by employing the strengths from both frameworks.

关键词： structure cluster crystal

Landmark learning by the Ozark zigzag salamander Plethodon angusticlavius

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Current Zoology 2011年第4期57卷 485-490页

作者： adam L. CRANE Alicia mATHIS Department of Biology Missouri State University Springfield MO 65897 USA

Although salamanders have been shown to respond to classical conditioning, spatial learning has been largely unstudied. We tested whether salamanders could learn to locate foraging areas by using landmarks. We trained 10 salamanders Plethodon angusticlavius to use landmarks （small rocks） to locate patches within the arena containing food （blackworms Lumbriculus variegatus）. At the comers of each square testing arena were four plastic dishes, one containing blackworms and the other three empty. A rock was placed in front of the dish containing blackworms, and the location of the food-dish was randomly chosen for each training trial. A control group was also trained to feed on blackworms in the presence of a rock, but the rock was positioned randomly among the four dish locations so that the rock was not a reliable landmark for the worms. Although the length of the training period for individual salamanders varied （22-38 trainings per individual）, the mean number of trainings for salamanders in the control and experimental groups was equal （30 training trials）. During testing, no blackworms were present to eliminate any visual or chemical cues emanating directly from the prey. Individuals trained with the rock landmarks spent sig- nificantly more time in the area of the landmark than did control salamanders [Current Zoology 57 （4）： 485-490, 2011].

关键词： Landmark learning Spatial learning Salamander learning Plethodon angusticlavius Beacon

Phylogenetic status of Pneumocystis from corticosteroid-treated gerbils

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Science China(Life Sciences) 2010年第10期53卷 1239-1246页

作者： RODNEY D adam Department of medicine and Immunobiology University of Arizona College of Medicine

Pneumocystis spp. infect the lungs of multiple mammalian species and cause disease in immunosuppressed individuals. The Pneumocystis isolates that have been studied to date fall into two major clades, those from primates and those from rodents. Within each of these clades, different species have been described on the basis of host specificity and differences in sequence and morphology. Here, we demonstrate that dexamethasone immunosuppression consistently results in histologically apparent lung infection in gerbils (28/35 animals). Sequence analysis of the 18S, 5.8S and internal transcribed spacer regions of the rDNA and a portion of the mitochondrial large subunit rDNA demonstrated that this gerbil Pneumocystis is grouped with other rodent Pneumocystis spp., but is distinct from them. Our results suggest that gerbil Pneumocystis differs sufficiently from Pneumocystis species found in other rodents to be considered a separate species.

关键词： 5.8S rRNA gene gerbil internal transcribed spacers (ITS) mitochondrial large subunit (mtLS) rRNA gene 18S rRNA gene Pneumocystis