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uses of Invasive Alien Plant Species in Rema-Kalenga Wildlife Sanctuary of Bangladesh

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Journal of mountain Science 2010年第4期7卷 380-385页

作者： md.Parvez rana Fahima Akhter Department of Forestry and Environmental Science Shahjalal University of Science and Technology Department of Accounting and Information System University of Chittagong

An exploratory survey was conducted on the uses and role of invasive alien species(IAS) to local livelihoods in the Rema-Kalenga Wildlife Sanctuary in the northeastern hilly region of *** was sampled in 50 quadrates,each 10 m×10 m,and 25 line transects,each 50 m×20 m,through a combination of random and systematic *** discussions were also arranged with fifty local inhabitants(17 % of the total inhabitants) to learn the various uses of IAS.A total of 17 alien plant species belonging to 10 different families,of which Leguminosae constitutes the highest number(5 species),include tree(53%) followed by herb(12%),shrub(12%) and others(weed,climber and palm).The majority of the identified species were found to be used for fuel,followed by timber production,medicinal or curative uses,fodder,and many *** addition to providing various forest products,alien tree species planted in forest plantation help provide many vital ecosystem services such as soil amelioration through nitrogen *** is true that the alien species have some negative impacts on local ecosystems,and not all of them are ***,a national programme must be initiated to distinguish the harmful from the harmless species and to identify the uses and impacts of the former and latter.

关键词： Invasive alien species Biodiversity Livelihoods Rema-Kalenga Wildlife sanctuary Bangladesh

Which are the most favourable conditions for reducing soil CO_(2)emissions with no-tillage?Results from a meta-analysis

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International Soil and Water Conservation Research 2022年第3期10卷 497-506页

作者： Simone Bregaglio Gabriele mongiano Rossana m.Ferrara Fabrizio Ginaldi Alessandra Lagomarsino Gianfranco rana CREA-Council for Agricultural Research and Economics Research Centre for Agriculture and EnvironmentI-40128BolognaItaly CREA-Council for Agricultural Research and Economics Research Centre for Plant Protection and CertificationSS 11 km 2500I-13100VercelliItaly CREA-Council for Agricultural Research and Economics Research Centre for Agriculture and EnvironmentI-70125BariItaly CREA-Council for Agricultural Research and Economics Research Centre for Agriculture and EnvironmentI-50125FirenzeItaly

No-tillage practices have a recognised beneficial impact on soil and water conservation while reducing erosion processes and enhancing soil organic matter ***,scientists continue to debate the effectiveness of no-tillage in reducing soil carbon dioxide(CO_(2))emissions from *** the same line of inquiry pursued by the authors who reviewed the impact of conservative practices on direct CO_(2)emissions,we applied meta-analytic and machine learning techniques to unravel the effect of no-tillage under contrasting pedo-environmental conditions and agricultural *** analysed fifty-six experimental studies investigating direct soil CO_(2)emissions from no-tillage and conventional tillage practices(102 paired observations),considering pedological(soil texture,soil organic carbon content),environmental(climate type),and management(crop rotation,experiment duration)*** estimated the effect of different practices on the daily amount of soil CO_(2)emissions,and the impact of tillage in the period immediately following the *** main insights of this study are:(i)the conditions leading to the highest reduction of CO_(2)emissions due to no-tillage were long-term experiments(standardised mean differenceβ=0.64)conducted in arid environments(β=0.76)and clay soils(β=0.81),with low organic carbon content(β=0.79)where crop rotations(β=0.65)were performed;(ii)the same conditions were associated with the lowest absolute CO_(2)emissions,irrespective of soil management;(iii)the highest contribution to the variability of absolute soil CO_(2)emissions was associated with soil texture(mean decrease in accuracy of Random Forest models,mDA=4.57),rotation(mDA=3.07),experiment duration(mDA=2.93)and soil organic carbon content(mDA=2.24),rather than to tillage practices;(iv)soil CO_(2)emissions almost doubled in the first day after a tillage event,consistently across studies(p=0.001).This meta-analysis offers quantitative figures on the impact of tillage

关键词： Agricultural soils Greenhouse gases Global warming Net-zero agriculture

Size Dependent Physical Properties of Nanostructured α-Fe_2O_3 Thin Films Grown by Successive Ionic Layer Adsorption and Reaction method for Antibacterial Application

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Journal of materials Science & Technology 2015年第1期31卷 1-9页

作者： A.u.ubale m.R.Belkhedkar Nanostructured Thin Film materials Laboratory Department of PhysicsGovt.Vidarbha Institute of Science and Humanities Department of Physics Shri Shivaji College

Thin films of nanostructured α-FeOwith thickness of 1 56,203 and 251 nm were deposited by successive ionic layer adsorption and reaction(SILAR) method onto glass substrates using FeCl-6HO and NaOH as cationic and anionic *** X-ray diffraction studies revealed that,α-FeOthin films are nanocrystalline in nature with rhombohedral *** morphological properties were investigated by field emission scanning electron and atomic force *** optical studies showed that α-FeOexhibits direct as well as indirect optical band gap *** electrical resistivity of α-FeOat 305 K decreases from 11.76×102 to9.46 × 10~2 Ω cm as film thickness increases from 156 to 251 *** thermo-emf measurements confirmed that α-FeOexhibits n-type *** nanocrystalline α-FeOexhibits antibacterial character against Staphylococcus aureus and its efficiency increases from 37.50%to 87.50%depending on crystallite size.

关键词： Thin films Nanostructures AFm(atomic force microsc

Arctic sea-ice extent: No record minimum in 2023 or recent years

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 52-55页

作者： Ola m.Johannessen Tor I.Olaussen Nansen Scientific Society BergenNorway Nansen Environmental and Remote Sensing Center BergenNorway

Arctic sea-ice extent reaches its minimum each year in September. On 11 September 2023 the minimum was 4.969 million square kilometers(***^(2)). This was not a record low, which occurred in 2012, when the minimum was 4.175 ***^(2), 0.794 ***^(2) less than the minimum in 2023. However, the ice extent had decreased by 0.432 ***^(2) compared with 2022. Nevertheless, the summer melting in 2023 was remarkably less than expected when considering the strong heat waves in the atmosphere and ocean, with record temperatures set around the world. In general, there is a high correlation between the long-term decrease in sea-ice extent and the increasing CO_(2) in the atmosphere, where the increase of CO_(2) in recent decades explains about 80% of the decrease in sea ice in September, while the remainder is caused by natural variability.

关键词： Sea ice Arctic minimum ice Climate

Insights from an academic endeavor into central nervous system drug discovery

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Neural Regeneration Research 2025年第6期20卷 1717-1718页

作者： Lieve van Veggel An m.Voets Tim Vanmierlo Rudy Schreiber BIOmED Biomedical Research Institute Faculty of Medicine and Life SciencesHasselt UniversityHasseltBelgium Department of Psychiatry and Neuropsychology Division of Translational NeuroscienceEuropean Graduate School of NeuroscienceSchool for Mental Health and NeuroscienceMaastricht UniversityMaastrichtThe Netherlands Section of Psychopharmacology Neuropsychology and PsychopharmacologyFaculty of Psychology and NeuroscienceMaastricht UniversityMaastrichtThe Netherlands university mS Center(umSC) Hasselt-PeltBelgium

Historically,"big pharma"did most central nervous system drug discovery R&D ***,in modern times their"management reductionism"resulted in disappointing pipelines and pharma resided to(late)development,regulatory approval,and marketing(Thong,2015).This had significant consequences for financing and executing research,resulting in a larger role for funding by governments and patient-organizations and a shift of research to academia(mazzucato,2013).

关键词： academic approval consequences

Traveling wave solutions for shallow water equations

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Journal of Ocean Engineering and Science 2017年第1期2卷 28-33页

作者： u.m.Abdelsalam Department of mathematics Faculty of ScienceFayoum UniversityAl FayoumEgypt

An extended homogeneous balance method is suggested in this *** on computerized symbolic computation and the homogeneous balance method,new exact traveling wave solutions of nonlinear partial differential equations(PDEs)are *** shallow-water equations represent a simple yet realistic set of equations typically found in atmospheric or ocean modeling applications,we consider the exact solutions of the nonlinear generalized shallow water equation and the fourth order Boussinesq *** this method,with the aid of mathematica,many new exact traveling wave solutions are successfully obtained.

关键词： Extended homogeneous balance method Shallow water equation Boussinesq equation Traveling wave solutions

Neurocircuit regeneration by extracellular matrix reprogramming

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Neural Regeneration Research 2025年第8期20卷 2300-2301页

作者： Shengzhang Su Ian N.Levasseur Kimberly m.Alonge Department of medicinal Chemistry University of WashingtonSeattleWAUSA Department of Chemistry University of WashingtonSeattleWAUSA Department of medicine University of Washington Medicine Diabetes InstituteSeattleWAUSA

The brain's extracellular matrix(ECm),which is comprised of protein and glycosaminoglycan(GAG)scaffolds,constitutes 20%-40% of the human brain and is considered one of the largest influencers on brain cell functioning(Soles et al.,2023).Synthesized by neural and glial cells,the brain's ECm regulates a myriad of homeostatic cellular processes,including neuronal plasticity and firing(miyata et al.,2012),cation buffering(moraws ki et al.,2015),and glia-neuron interactions(Anderson et al.,2016).Considering the diversity of functions,dynamic remodeling of the brain's ECm indicates that this understudied medium is an active participant in both normal physiology and neurological diseases.

关键词： matrix programming

Breath tests and irritable bowel syndrome

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World Journal of Gastroenterology 2014年第24期20卷 7587-7601页

作者： Satya Vati rana Aastha malik Department of Super Specialty Gastroenterology Post Graduate Institute of Medical Education and ResearchSector 12Chandigarh 160012India

Breath tests are non-invasive tests and can detect H2 and CH4 gases which are produced by bacterial fermentation of unabsorbed intestinal carbohydrate and are excreted in the breath. These tests are used in the diagno... 详细信息

Breath tests are non-invasive tests and can detect Hub>2ub> and CHub>4ub> gases which are produced by bacterial fermentation of unabsorbed intestinal carbohydrate and are excreted in the breath. These tests are used in the diagnosis of carbohydrate malabsorption, small intestinal bacterial overgrowth, and for measuring the orocecal transit time. malabsorption of carbohydrates is a key trigger of irritable bowel syndrome (IBS)-type symptoms such as diarrhea and/or constipation, bloating, excess flatulence, headaches and lack of energy. Abdominal bloating is a common nonspecific symptom which can negatively impact quality of life. It may reflect dietary imbalance, such as excess fiber intake, or may be a manifestation of IBS. However, bloating may also represent small intestinal bacterial overgrowth. Patients with persistent symptoms of abdominal bloating and distension despite dietary interventions should be referred for Hub>2ub> breath testing to determine the presence or absence of bacterial overgrowth. If bacterial overgrowth is identified, patients are typically treated with antibiotics. Evaluation of IBS generally includes testing of other disorders that cause similar symptoms. Carbohydrate malabsorption (lactose, fructose, sorbitol) can cause abdominal fullness, bloating, nausea, abdominal pain, flatulence, and diarrhea, which are similar to the symptoms of IBS. However, it is unclear if these digestive disorders contribute to or cause the symptoms of IBS. Research studies show that a proper diagnosis and effective dietary intervention significantly reduces the severity and frequency of gastrointestinal symptoms in IBS. Thus, diagnosis of malabsorption of these carbohydrates in IBS using a breath test is very important to guide the clinician in the proper treatment of IBS patients.

关键词： Bacterial overgrowth Breath test Carbohydrate malabsorption Irritable bowel syndrome Lactulose breath test Small intestine Sorbitol breath test

Gate current modeling and optimal design of nanoscale non-overlapped gate to source/drain mOSFET

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Journal of Semiconductors 2011年第7期32卷 14-19页

作者： Ashwani K.rana Narottam Chand Vinod Kapoor Department of Electronics and Communication National Institute of Technology Department of Computer Science and Engineering National Institute of Technology

A novel nanoscale mOSFET with a source/drain-to-gate non-overlapped and high-k spacer structure has been demonstrated to reduce the gate leakage current for the first *** gate leakage behaviour of the novel mOSFET structure has been investigated with the help of a compact analytical model and Sentaurus simulation. A fringing gate electric field through the dielectric spacer induces an inversion layer in the non-overlap region to act as an extended S/D（source/drain） *** is found that an optimal source/drain-to-gate non-overlapped and high-A：spacer structure has reduced the gate leakage current to a great extent as compared to those of an overlapped ***,the proposed structure had improved off current,subthreshold slope and drain induced barrier lowering（DIBL） *** is concluded that this structure solves the problem of high leakage current without introducing extra series resistance.

关键词： gate tunneling current analytical model spacer dielectrics DIBL subthreshold slope