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Deforestation and forest fragmentation in the highlands of Eastern Ghats,India

Journal of Forestry research 2021年第3期32卷 1127-1138页

作者： rakesh paul Kakoli Banerjee Central University of Orissa KoraputOdishaIndia

Tropical forest cover change along with increasing fragmentation has detrimental effects on the global *** the current study change in both forest cover and fragmentation of Koraput district have been assessed in the past three decades(1987-2017)and future decade(2017-2027),which has been modelled using logistic regression showing a gradual decrease in the forest cover and increase in *** long term deforestation rates from 1987 to 2017(current period)and from 1987 to 2027(predicted period)were found to be-0.018 and-0.012,*** of the total geographical area,2027 number of grids(1 km^(2))out of 8856 grids were found to have shown extinction of forest in the study *** conversion of forested lands into other land uses has been one of the major causes of deforestation in Koraput,especially because of the increasing mining activities and establishment of three major industries namely National Aluminium Company(NALCO),Damanjodi,Hindustan Aeronautics Limited(HAL),Sunabeda and Ballarpur Industries Limited(BILT).The forest fragmentation reveals a negative trend,recording highest conversion from large core fragments to edge(191.33 km2)and the predicted period has also shown the same trend of negative change,which poses serious danger to the structure of the *** of all the landscape matrices calculated,number of patches will increase to 214 in 2027 from 93 in *** the test between geographically weighted regression(GWr)and ordinary least square regression(OLS),GWr was the better fit model for drawing a spatial relationship between forest cover and fragmentation *** study confirmed that the forest cover change has impacted the forest fragmentation in the study *** programmes like rEDD+should be implemented along with the experiences of Community Forest Management and the joint forest management should be intensified at community level in order to develop better management practices to conserve habitats in biodi

关键词： Forest cover Forest ecosystem Predictive model Forest fragmentation Grid based change Geographically weighted regression

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Essential residues for the enzyme activity of ATP-dependent MurE ligase from Mycobacterium tuberculosis

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Protein & Cell 2010年第11期1卷 1011-1022页

作者： Chandrakala Basavannacharya paul r.Moody Tulika Munshi Nora Cronin Nicholas H.Keep Sanjib Bhakta Institute for Structural and Molecular Biology Department of Biological SciencesBirkbeckUniversity of LondonLondon WC1E 7HXUK

The emergence of total drug-resistant tuberculosis(TDrTB)has made the discovery of new therapies for tuberculosis *** cytoplasmic enzymes of peptidoglycan biosynthesis have generated renewed interest as attractive targets for the development of new *** of the cytoplasmic enzymes,uridine diphosphate(UDP)-MurNAc-tripeptide ligase(MurE),catalyses the addition of meso-diaminopimelic acid(m-DAP)into peptidoglycan in Mycobacterium tuberculosis coupled to the hydrolysis of *** of *** MurE were generated by replacing K157,E220,D392,r451 with alanine and N449 with aspartate,and truncating the first 24 amino acid residues at the Nterminus of the *** of the specific activity of these proteins suggested that apart from the 24 Nterminal residues,the other mutated residues are essential for *** in Km values for one or more substrates were observed for all mutants,except the N-terminal truncation mutant,indicating that these residues are involved in binding substrates and form part of the active site *** mutant proteins were also tested for their specificity for a wide range of ***,the mutations K157A,E220A and D392A showed hydrolysis of ATP uncoupled from *** ATP hydrolysis rate was enhanced by at least partial occupation of the uridine nucleotide dipeptide binding *** study provides an insight into the residues essential for the catalytic activity and substrate binding of the ATP-dependent MurE *** ATPdependent MurE ligase is a novel drug target,the understanding of its function may lead to development of novel inhibitors against resistant forms of ***.

关键词： peptidoglycan MurE ligase site-directed mutagenesis m-DAP

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Spin-resolved self-doping tunes the intrinsic halfmetallicity of AIN nanoribbons

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Nano research 2014年第1期7卷 63-70页

作者： Alejandro Lopez-Bezanilla P. Ganesh paul r. C. Kent Bobby G. Sumpter Oak ridge National Laboratory One Bethel Valley Road Oak Ridge Tennessee 37831-6493 USA Present address: Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA

We present a first-principles theoretical study of electric field- and straincontrolled intrinsic half-metallic properties of zigzagged aluminium nitride （A1N） nanoribbons. We show that the half-metallic property of AIN ribbons can undergo a transition into fully-metallic or semiconducting behavior with application of an electric field or uniaxial strain. An external transverse electric field induces a full charge screening that renders the material semiconducting. In contrast, as uniaxial strain varies from compressive to tensile, a spin-resolved selective self-doping increases the half-metallic character of the ribbons. The relevant strain-induced changes in electronic properties arise from band structure modifications at the Fermi level as a consequence of a spin-polarized charge transfer between p-orbitals of the N and A1 edge atoms in a spin-resolved self-doping process. This band structure tunability indicates the possibility of designing magnetic nanoribbons with tunable electronic structure by deriving edge states from elements with sufficiently different localization properties. Finite temperature molecular dynamics reveal a thermally stable half-metallic nanoribbon up to room temperature.

关键词： aluminum nitride half-metallicity strain electric field

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The Treatment of Ostial Coronary Arteriopathy Secondary to Thoracic Irradiation With Off-pump Coronary Artery Bypass Grafting: A Case report and review of Literatures

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South China Journal of Cardiology 2008年第2期9卷 92-94页

作者：朱亚彬 paul vogt 石维平杨岷陆世春 Department of Cardio-thoracic Surgery The Affiliated Hospital of Medical School Yangzhou University Department of Cardiovascular Surgery University Hospital Giessen Germany

Objectives We report a case in which a patient who suffered from angina secondary to mediastinal irradiation and have been treated by off-pump coronary artery bypass （OPCAB） in our hospital since 3 years ago. A 34-year-old man presented with angina for 8 years after receiving radiation therapy for Hodgkin＇s lymphoma. We retrospectively reviewed all the cases of OPCAB in our hospital and followed-up data for up to 3 years post-operatively. Mediastinal irradiation is probably the cause of significant ostial stenosis of left main coronary and right coronary artery. OPCAB grafting was performed on this patient 3 years ago. His angina disappeared after operation, and he recovered well during follow-up. Conclusions Patients with malignancies who have received mediastinal irradiation should be carefully followed up and routinely screened for the premature development of coronary artery disease. OPCAB may be an appropriate treatment for coronary artery disease caused by mediastinal irradiation.

关键词： mediastinal irradiation heart disease coronary artery bypass grating

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SUSTAINABLE MICrO-VILLAGES AND THE CArWOOLA HOUSE PrOJECT IN CANBErrA,AUSTrALIA

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Journal of Green Building 2018年第4期13卷 169-190页

作者： paul Barnett paul Barnett Design Group

INTrODUCTION Our needs as social and familial beings change over the course of our lives;however,it has become common practice to build as though these needs remain static through *** needs of a child,young adult,family,middle age and the elderly are dynamic between generations,and adding to these evolving life needs is the crisis of housing affordability.ree decades ago a house could cost 3-4 times an individual’s annual income,today that cost is closer to 10-12 *** response to these chal-lenges,this article explores the concept of Sustainable Micro-Villages,providing insight into a new approach to energy-efficient housing with reference to our case-study project-Carwoola *** Micro-Villages can be defined as a cluster of integrated dwellings,referred to here as Living *** a“single house”on a single site,these micro-villages can be comprised of two or more smaller buildings that provide private dwelling space for a single person,couples,couples with children,parents,elderly,friends and any combination of social *** pods cluster around a natural garden setting,enhanced by waterharvesting,and are connected with covered,open or enclosed links depending on the climate of the *** recent iterations of this type of dwelling also incorporate solar passive design,passive house and green-house *** Australia,new house designs are evaluated as part of an approvals process for their energy rating.1e Australian Building Code requires a minimum 6-star rating,ranging up to 10 stars for any new home to be built.A 6-star rating provides a good level of insulation and energy performance if built correctly,while 10 stars represent the highest level of energy performance and refers to a dwelling that needs no heating or *** Micro-Villages consistently achieve an 8 to 10-star rating by combining Solar Passive Design principles(good orientation,thermal mass and thermal performance)and Passive House Technology(

关键词： Micro Villages Living Pods Naturescapes Solar Passive Passive House Photovoltaics Waterharvesting Biophilia Permaculture Biodynamics Water Storage

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Effects of N_2/O_2 flow rate on the surface properties and biocompatibility of nano-structured TiO_xN_y thin films prepared by high vacuum magnetron sputtering

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Chinese Physics B 2015年第7期24卷 321-326页

作者： Sehrish Saleem r.Ahmad Uzma Ikhlaq r.Ayub Jin Wei Hong Xu rui Zhen Li Peng Hui Khizra Abbas paul K.Chu Department of Physics Government College University Department of Physics and Materials Science City University of Hong Kong Centre for Advanced Studies in Physics (CASP) Government College University

NiTi shape memory alloys（SMA） have many biomedical applications due to their excellent mechanical and biocompatible properties. However, nickel in the alloy may cause allergic and toxic reactions, which limit some applications. In this work, titanium oxynitride films were deposited on NiTi samples by high vacuum magnetron sputtering for various nitrogen and oxygen gas flow rates. The x-ray diffraction（XrD） and x-ray photoelectron spectroscopy（XPS） results reveal the presence of different phases in the titanium oxynitride thin films. Energy dispersive spectroscopy（EDS） elemental mapping of samples after immersion in simulated body fluids（SBF） shows that Ni is depleted from the surface and cell cultures corroborate the enhanced biocompatibility in vitro.

关键词： titanium oxynitride films magnetron sputtering biocompatibility

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Expressive line drawings of human faces from range images

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Science in China(Series F) 2009年第2期52卷 295-307页

作者： HUANG YueZhu MArTIN ralph r. rOSIN paul L. MENG XiangXu YANG ChengLei Department of Computer Science and Technology Shandong University Jinan 250101 China School of Computer Science Cardiff University Cardiff United Kingdom

We propose a novel technique to extract features from a range image and use them to produce a 3D pen-and-ink style portrait similar to a traditional artistic drawing. Unlike most previous template-based, component-based or example-based face sketching methods, which work from a frontal photograph as input, our system uses a range image as input. Our method runs in real-time for models of moderate complexity, allowing the pose and drawing style to be modified interactively. Portrait drawing in our system makes use of occluding contours and suggestive contours as the most important shape cues. However, current 3D feature line detection methods require a smooth mesh and cannot be reliably applied directly to noisy range images. We thus present an improved silhouette line detection algorithm. Feature edges related to the significant parts of a face are extracted from the range image, connected, and smoothed, allowing us to construct chains of line paths which can then be rendered as desired. We also incorporate various portrait-drawing principles to provide several simple yet effective non- photorealistic portrait renderers such as a pen-and-ink shader, a hatch shader and a sketch shader. These are able to generate various life-like impressions in different styles from a user-chosen viewpoint. To obtain satisfactory results, we refine rendered output by smoothing changes in line thickness and opacity. We are careful to provide appropriate visual cues to enhance the viewer＇s comprehension of the human face. Our experimental results demonstrate the robustness and effectiveness of our approach, and further suggest that our approach can be extended to other 3D geometric objects.

关键词： portrait drawing non-photorealistic rendering line drawing suggestive contour occluding contour feature line stylization

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Variations of the harmonic components of the X-ray pulse profile of PSr B1509–58

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research in Astronomy and Astrophysics 2015年第1期15卷 28-36页

作者： Pragati Pradhan Biswajit paul Harsha raichur Bikash Chandra paul St Joseph’s College Singamari Darjeeling 734104 West Bengal India North Bengal University Raja Rammohanpur District Darjeeling 734013 West Bengal India raman research Institute Sadashivnagar Bangalore 560080 India

We used the Fourier decomposition technique to investigate the stability of the X-ray pulse profile of a young pulsar PSr B1509–58 by studying the relative amplitudes and phase differences of its harmonic components with respect to the fundamental using data from the rossi X-ray Timing Explorer. Like most young rotation powered pulsars, PSr B1509–58 has a high spin down rate. It also has less timing noise, allowing accurate measurement of higher order frequency derivatives which in turn helps in the study of the physics of pulsar spin down. Detailed investigation of pulse profiles over the years will help us establish any possible connection between the timing characteristics and the high energy emission characteristics for this ***, the study of pulse profiles of short period X-ray pulsars can also be useful when used as a means of interplanetary navigation. The X-ray pulse profile of this source has been analyzed for 15 yr（1996–2011）. The long term average amplitudes of the first, second and third harmonics（and their standard deviation for individual measurements） compared to the fundamental are 36.9%（1.7%）, 13.4%（1.9%） and 9.4%（1.8%） respectively. Similarly, the phases of the three harmonics（and standard deviations） with respect to the fundamental are 0.36（0.06）, 1.5（0.2） and 2.5（0.3） radian respectively. We do not find any significant variation of the harmonic components of the pulse profile in comparison to the fundamental.

关键词： pulsars: individual:(PSr B1509–58) stars: neutron X-rays

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Enabling intercalation-type TiNb_(24)O_(62)anode for sodiumand potassium-ion batteries via a synergetic strategy of oxygen vacancy and carbon incorporation

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SusMat 2023年第2期3卷 222-234页

作者： Ajay Piriya Vijaya Kumar Saroja Zhipeng Wang Henry r.Tinker Feng ryanWang paul r.Shearing Yang Xu Department of Chemistry University College LondonLondonUK Materials and Catalysis Laboratory Department of Chemical EngineeringUniversity College LondonLondonUK Electrochemical Innovation Lab Department of Chemical EngineeringUniversity College LondonLondonUK

The key to develop earth-abundant energy storage technologies sodium-and potassium-ion batteries(SIBs and PIBs)is to identify low-cost electrode materials that allow fast and reversible Na^(+)/K^(+)***,we report an intercalation-type material TiNb_(24)O_(62)as a versatile anode for SIBs and PIBs,via a synergistic strategy of oxygen vacancy and carbon incorporation to enhance ion and electron *** TiNb_(24)O_(62-x)/reduced graphene oxide(rGO)composite anode delivers high reversible capacities(130 mA h g^(-1)for SIBs and 178 mA h g^(-1)for PIBs),great rate performance(54 mA h g^(-1)for SIBs and 37 mA h g^(-1)for PIBs at 1 A g^(-1)),and superior cycle stability(73.7%after 500 cycles for SIBs and 84%after 300 cycles for PIBs).The performance is among the best results of intercalation-typemetal oxide anodes for SIBs and *** better performance of TiNb_(24)O_(62-x)/rGO in SIBs than PIBs is due to the better reaction kinetics of the ***,mechanistic study confirms that the redox activity of Nb4+/5+is responsible for the reversible intercalation of Na^(+)/K^(+).Our results suggest that TiNb_(24)O_(62-x)/rGO is a promising anode for SIBs and PIBs and may stimulate further research on intercalation-type compounds as candidate anodes for large ion batteries.

关键词： anode defects intercalation potassium-ion battery sodium-ion battery sustainability

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Hemorrhagic pancreatitis from fenofibrate and metformin toxicity:a case report

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World Journal of Emergency Medicine 2023年第6期14卷 495-498页

作者： Marcus Aik Beng Lee Mingwei Ng paul Yugendra Yiju Yao r Ponampalam Boon Kiat Kenneth Tan Department of Emergency Medicine Singapore General HospitalSingapore 169608Singapore Analytical Toxicology Laboratory Health Sciences AuthoritySingapore 169078Singapore

Fibrates have been used for over forty-odd years to manage dyslipidemia and are generally considered safe and well-tolerated.^([1])However,little is known about the toxicity offibrates in overdose,[2]and most of the knowledge about fibrate toxicity comes from extrapolated observations of adverse effects encountered at therapeutic doses instead.

关键词： doses pancreatitis

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