检索结果-南通市图书馆

Phytochemical analysis,antioxidant,acetylcholinesterase,andα-amylase inhibitors from Hippeastrum hybridum extract

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2024年第3期44卷 496-504页

作者： Naila Sher Mushtaq Ahmed nadia Mushtaq Department of Biotechnology University of Science and Technology Bannu-KPK 28100Pakistan Department of Botany University of Science and Technology Bannu-KPK 28100Pakistan

OBJECTIVE:To investigate the effects of Hippeastrum hybridum(HH)as a free radical scavenger,and an inhibitor of the two enzymes i-e Alpha-amylase(α-amylase)and acetylcholinesterase(AChE).METHODS:In this study,HH plant was preliminary analyzed for phytochemical screening and then tested for its antioxidant,anti-α-amylase,and anti-AChE efficiency via standard ***:Phytochemical analysis shows the existence of different compounds;while Coumarins and quinones were *** total phenolic,flavonoid,and tannins content were found to be(78.52±0.69)mg GAE/g,(2.01±0.04)mg RUE/g,and(58.12±0.23)mg TAE/g of plant extract respectively.28.02%±0.02%alkaloid and 2.02%±0.05%saponins were present in the HH *** HH extract showed the anti-oxidant property with IC50(50%inhibition)of(151.01±0.13)(HH),(79.01±0.04)(Ascorbic acid)for ferric reducing,(91.48±0.13)(HH),(48.02±0.11)(Ascorbic acid)against Ammonium molybdenum,(156.02±0.31)(HH),(52.38±0.21)(Ascorbic acid)against DPPH,136.01±0.21(HH),52.02±0.31(Ascorbic acid)against H_(2)O_(2),and 154.12±0.03(HH),(40.05±0.15)(Ascorbic acid)μg/mL against ABTS *** analysis indicated that HH caused a competitive type of inhibition ofα-amylase(V_(max)remained constant and Km increases from 10.65 to84.37%)while Glucophage caused the un-competitive type of inhibition i-e both Km and V_(max)decreased from40.49 to 69.15%and 38.86 to 69.61%*** K_(i),(inhibition constant);K_(I),(dissociation constant),K_(m),(Michaelis-Menten constant),and IC50 were found to be62,364,68.1,and 38.08±0.22 for HH and 12,101.05,195,34.01±0.21 for ***,HH causes an anon-competitive type of inhibition of AChE i-e Km remains constant while V_(max)decreases from 60.5%to74.1%.The calculated K_(i),K_(I),K_(m),and IC50 were found to be 32,36.2,0.05,and 18.117±***:From the current results,it is concluded that HH extract contains bioactive compounds,and could be a good alternative to controlling oxidant

关键词： Hippeastrum hybridum phytochemicals antioxidant alpha-amylase acetylcholinesterase

ANonmonotone Projected Gradient Method for Multiobjective Problems on Convex Sets

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of the Operations Research Society of China 2024年第2期12卷 410-427页

作者： Gabrie Anibal Carrizo nadia Soledad Fazzio Maria Laura Schuverdt Department of Mathematics National University of the SouthBahia BlancaArgentina Department of Mathematics University of La PlataLa PlataArgentina

In this work we consider an extension of the classical scalar-valued projected gradient method for multiobjective problems on convex *** in Fazzio et al.(Optim Lett 13:1365-1379,2019)a parameter which controls the step length is considered and an updating rule based on the spectral gradient method from the scalar case is *** the present paper,we consider an extension of the traditional nonmonotone approach of Grippo et al.(SIAM J Numer Anal 23:707-716,1986)based on the maximum of some previous function values as suggested in Mita et al.(J Glob Optim 75:539-559,2019)for unconstrained multiobjective optimization *** prove the accumulation points of sequences generated by the proposed algorithm,if they exist,are stationary points of the original *** experiments are reported.

关键词： Multiobjective optimization Projected gradient methods Nonmonotone line search Global convergence

Risk of Tropical Cyclones and Floods to Power Grids in Southeast and East Asia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

INTERNATIONAL JOURNAL OF DISASTER RISK SCIENCE 2024年第4期15卷 494-507页

作者： Ye, Mengqi Ward, Philip J. Bloemendaal, nadia Nirandjan, Sadhana Koks, Elco E. Vrije Univ Amsterdam Inst Environm Studies NL-1081 HV Amsterdam Netherlands Deltares NL-2629 HV Delft Netherlands Royal Netherlands Meteorol Inst KNMI NL-3731 GA De Bilt Netherlands

Power grids play a critical role in modern society, serving as the lifeline of a well-functioning economy. This article presents a first large-scale study on the risk estimation of tropical cyclone (TC)-induced winds and coastal floods, which can widely impact power grids in Southeast and East Asia. Our comprehensive risk model incorporates detailed infrastructure data from OpenStreetMap (OSM) and government power grid maps, along with global hazard maps and vulnerability curves. The results reveal that the estimated expected annual damages from TCs and coastal floods to OSM-mapped assets account for approximately 0.07% (0.00-0.38%) and 0.02% (0.00-0.02%) of the total GDP of the study area, respectively. We analyzed the main sources of uncertainty in the risk model and emphasized the importance of understanding asset vulnerability. These results highlight the urgent need to strengthen power infrastructure to withstand the impacts of natural hazards, and the significance of reliable risk information for improving power grid design and planning. Focusing on developing more region-specific infrastructure data and vulnerability curves will improve the accuracy of risk estimation and provide valuable insights not only for the electricity sector but also for customers of other infrastructure systems that heavily rely on a stable supply of electricity.

关键词： Asset level Coastal floods Power grids Risk analysis Tropical cyclones Vulnerability curves DAMAGE INFRASTRUCTURE ADAPTATION FRAMEWORK IMPACTS SYSTEMS COSTS

Pro-fertility effect of Ficus carica fruit extract in streptozotocin-induced male rats

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian pacific Journal of Reproduction 2024年第1期13卷 34-41页

作者： Mat Noor Mahanem Subramaniam Puvaratnesh AbuBakar Umarqayum Shamsusah nadia A Department of Biological Sciences and Biotechnology Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 BangiSelangorMalaysia Institute of Biological Sciences Faculty of ScienceUniversity Malaya50603 Kuala LumpurMalaysia Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan MalaysiaBangi 43600Malaysia

Objective:To explore the impact of Ficus carica fruit aqueous extract on fertility parameters in streptozotocin(STZ)-induced male ***:Twenty-four male Sprague-Dawley rats were divided into four different *** groups except a normal control group were induced with 50 mg/kg of streptozotocin(STZ)intravenously to induce diabetes.A positive control group was treated with an antidiabetic drug,metformin(500 mg/kg)whereas a negative control group remained untreated throughout the ***,another diabetic rat group received treatment with 400 mg/kg of aqueous Ficus carica fruit *** in the treatment group were administered Ficus carica fruit aqueous extract daily through forcefeeding via oral gavage for a 21-day *** included the sperm quality(count,motility and morphology),histology of the testes,serum testosterone and fasting blood glucose(FBG)***:The FBG level of the Ficus carica-treated rats exhibited a significant decrease compared to the negative control group(P<0.05).Sperm quality analysis also indicated that the aqueous Ficus carica extract had significant positive effects on sperm count and motility(P<0.05).The histology of the testes in Ficus caricatreated rats revealed an improved cell arrangement in the germinal cell ***,serum testosterone level showed an increment in the Ficus carica treatment group in comparison to the negative control ***:Our findings provide compelling evidence for the profertility and anti-hyperglycemic properties of aqueous Ficus carica fruit extract in diabetic-induced male rats.

关键词： Ficus carica fruit Male fertility parameter Diabetes mellitus Anti-hyperglicemic

Morpho-anatomical adaptations of dominantly grown wild Datura inoxia to wastewater resource:Productivity and ecological issues

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geoscience Frontiers 2024年第3期15卷 248-258页

作者： Taimoor Hassan Farooq Shagufta Jabeen Awais Shakoor Muhammad Saleem Arif nadia Siddique Khuram Shahzad Muhammad Umair Riaz Yong Li Bangor College China a Joint Unit of Bangor University and Central South University of Forestry and TechnologyChangsha 410004HunanChina Department of Botany The Islamia University of BahawalpurBahawalpur 63100Pakistan Hawkesbury Institute for the Environment Western Sydney UniversityPenrithNSW 2751Australia Department of Environmental Sciences Government College University FaisalabadFaisalabad 38000Pakistan Department of Forestry Rangeand Wildlife ManagementThe Islamia University of BahawalpurBahawalpur 63100Pakistan Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China Central South University of Forestry and TechnologyChangsha 410004HunanChina

With the increasing global water scarcity,wastewater irrigation has become widespread,but it can have detrimental ecological *** wastewater contains valuable nutrients for plants,improper treatment or the use of untreated wastewater in irrigation can negatively impact soil fertility and plant *** study is divided into two parts:firstly,a phytosociological survey was conducted to identify plant species with the highest importance value index(IVI)in the vicinity of wastewaterirrigated ***,a comparative morpho-anatomical analysis was carried out to investigate the morpho-anatomical adaptations of the species with the highest IVI under wastewater irrigation compared to normal water *** results of the phytosociological survey revealed the presence of 51 plant species in the vicinity of the wastewater-irrigated areas,with varying relative densities and *** inoxia exhibited the highest IVI(28.79),followed by Xanthium strumarium(24.34),while Lippia nodiflora showed the lowest IVI(1.86).The morphological growth of *** was superior under normal water irrigation,but the average root length was greater under wastewater *** cell anatomy,cell thickness and cell area characteristics in the dermal,ground,and vascular tissues of the stem and root tended to be greater under wastewater ***,the opposite trend was observed in leaf anatomical analysis,possibly due to the combined effect of wastewater and climatic *** and root xylem thickness were greater under wastewater irrigation,whereas phloem thickness was higher under normal water *** number of vascular bundles in the stem,root,and leaf was higher under wastewater treatment compared to normal water irrigation,but their arrangement was circular in the latter and scattered under wastewater *** inoxia demonstrated strong adaptive potential under wastewater irrigation,as indicated by its highest relative d

关键词： Water pollution Phytosociology Structural growth Phytoremediation Agricultural irrigation Ecological concerns

Neural network-based estimation of lower limb joint kinematics:A minimally intrusive approach for gait analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Medicine in Novel Technology and Devices 2024年第3期23卷 81-97页

作者： Farid Kenas nadia Saadia Amina Ababou Noureddine Ababou Mahdi Zabat Karim BenSiSaid Laboratory of Robotics Parallelism and Embedded Systems University of Science and Technology Houari Boumediene AlgiersAlgeria Laboratory of Instrumentation University of Science and Technology Houari Boumediene AlgiersAlgeria

The establishment of a quantitative gait analysis system holds paramount importance,particularly in the context of functional rehabilitation of the lower *** emphasize the imperative for sensors to be portable,compact,integrated,and non-intrusive,crucial characteristics in the rehabilitation field to facilitate their use and ensure optimal integration into care *** study investigates an innovative approach aimed at reducing the reliance on body-fixed sensors by harnessing their data within a neural network,thus concentrating on the joint kinematics of the lower *** primary objective is to estimate the flexion-extension angles of the hip,knee,and ankle during walking,utilizing data collected by two sensors positioned on the subject's ***,the neural network undergoes training with calculated data(leg tilt angles and angular velocities)sourced from the OpenSim database,followed by further refinement with experimental data obtained from a subject walking on a treadmill,wherein leg tilt angles and angular velocities are *** significance of this research is underscored by the demonstrated capability,through conducted tests,of the implemented networks to efficiently fuse data from a minimal set of ***,the proposed approach emerges as both practical and minimally intrusive,facilitating a robust evaluation of gait kinematic parameters.

关键词： Artificial neural network Joint angle Inertial measurement unit Kinematic gait analysis Treadmill

Nonlinear Study on the Mechanical Performance of Built-Up Cold-Formed Steel Concrete-Filled Columns under Compression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2024年第6期139卷 3435-3465页

作者： Oulfa Harrat Yazid Hadidane S.M.Anas Nadhim Hamah Sor Ahmed Farouk Deifalla Paul O.Awoyera nadia Gouider Civil Engineering Laboratory Faculty of TechnologyDepartment of Civil EngineeringBadji Mokhtar-Annaba UniversityP.O.Box 12Annaba23000Algeria Department of Civil Engineering Faculty of Engineering and TechnologyJamia Millia Islamia(A Central University)New Delhi110025India Civil Engineering Department University of GarmianKalar46021Iraq Department of Civil Engineering Harran UniversitySanliurfa63510Turkey Structural Engineering and Construction Management Department Future University in EgyptNew Cairo11835Egypt Department of Civil Engineering Covenant UniversityOta112233Nigeria

Given their numerous functional and architectural benefits,such as improved bearing capacity and increased resistance to elastic instability modes,cold-formed steel(CFS)built-up sections have become increasingly developed and used in recent years,particularly in the construction *** paper presents an analytical and numerical study of assembled CFS two single channel-shaped columns with different slenderness and configurations(backto-back,face-to-face,and box).These columns were joined by double-row rivets for the back-to-back and box configurations,whereas they were welded together for the face-to-face *** built-up columns were filled with ordinary concrete of good *** element models were applied,using ABAQUS software,to assess mechanical performance and study the influence of assembly techniques on the behavior of cold-formed columns under axial *** approaches based on Eurocode 3 and Eurocode 4 recommendations for un-filled and concrete-filled columns respectively were followed for the numerical analysis,and concrete confinement effects were also considered per American Concrete Institute(ACI)standards for face-to-face and box *** obtained results indicated a good correlation between the numerical results and the proposed analytical methodology which did not exceed 8%.The failure modes showed that the columns failed due to instabilities such as local and global buckling.

关键词： Cold-formed steel built-up sections slenderness rivets welded axial compression analytical approaches confinement buckling

Dual innervation method to preserve erectile function following prostatectomy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Plastic and Reconstructive Surgery 2024年第3期6卷 159-160页

作者： nadia Hui Shan Sim Allen Sim Dayna Sim Bien-Keem Tan Allen Wei-Jiat Wong Plastic Reconstructive and Aesthetic Surgery ServiceSengkang General Hospital544886Singapore Department of Urology Mount Alvernia Hospital Singapore574623Singapore Department of General Surgery Sengkang General Hospital544886Singapore Department of Plastic Reconstructive and Aesthetic SurgerySingapore General Hospital169608Singapore

Prostate cancer is the second most prevalent cancer in ***-assisted radical prostatectomy(RARP)has altered the landscape of prostate cancer *** the excellent oncological outcomes associated with RARP,the rate of erectile dysfunction(ED)remains *** repair of disrupted cavernous nerves with interpositional nerve grafts has been described;however,the outcomes have been *** hypothesize that this is attributed to Schwann cell atrophy and axonal regeneration limitations caused by long nerve *** proposed the use of nerve transfer to support axonal regrowth via an inter-positional graft with additional donor axons.A cadaveric study was performed to evaluate the anatomical feasibility of a vastus lateralis nerve(VLN)transfer to the distal recipient cavernous nerve *** VLN is long with multiple branching patterns that allow tension-free coaptation of the cavernous *** postulate that a dual innervation method using VLN nerve transfer together with interpositional nerve graft repair of the transacted cavernous nerves may improve the outcomes of ED post-RARP.

关键词： Erectile dysfunction Prostatectomy Interposition nerve graft Nerve transfer Vastus lateralis nerve

Non-invasive prenatal testing can detect silent cancers in expecting mothers

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第2期11卷 585-588页

作者： Alessandro Ottaiano Monica Ianniello nadia Petrillo Mariachiara Santorsola Luigia De Falco Salvatore Giovanni Castaldi Maria Antonietta Castaldi Valentina Giudice Carmine Selleri Giovanni Savarese Unit of Innovative Therapies for Abdominal Metastases Istituto Nazionale Tumori di NapoliIRCCS “G.Pascale”Via Mariano SemmolaNapoli 80131Italy AMES Centro Polidiagnostico Strumentale SRLVia Padre Carmine Fico 24Casalnuovo Di Napoli 80013Italy Specialization School of Clinical Pathology Università degli Studi di SalernoVia Giovanni Paolo II 132Fisciano 84084Italy Unit of High-Risk Pregnancy and Prenatal Diagnosis University Hospital “San Giovanni di Dio e Ruggi d'Aragona”Via San LeonardoSalerno 84125Italy Hematology and Transplant Center University Hospital “San Giovanni di Dio e Ruggi d'Aragona”Via San LeonardoSalerno 84125Italy Department of Medicine Surgery and Dentistry“Scuola Medica Salernitana”Via Salvador Allende 43Baronissi 84081Italy

Pregnancy is a unique physiological state in which several changes *** of the most important aspects is the maternal immune system,which sets to tolerate the presence of thedeveloping fetus(a semi-allogeneic organism),while at the same time providing protection against pathogens.1 Pregnancy has long been known to affect the risk of certain cancers including breast cancer in the short term,gestational trophoblastic disease(GTD),cervical cancer,and melanoma.2,3 The reasons for the increased risk of these cancers during pregnancy are not fully understood,but several hypotheses have been proposed as the hormonal and immune system changes.

关键词： mother cancers fetus