检索结果-南通市图书馆

Journal of Integrative Plant Biology 2014年第5期56卷 505-515页

作者： Miguel Garriga Jorge B. Retamales sebastián Romero-Bravo Peter d.s. Caligari Gustavo A. lobos Faculty of Agricultural sciences Plant Breeding and Phenomic Center Universidad de Talca Instituto de Biología Vegetaly Biotecnología Universidad de Talca

Chlorophyll and anthocyanin contents provide a valuable indicator of the status of a plant’s physiology, but to be more widely utilized it needs to be assessed easily and non‐destructively. This is particularly evident in terms of assessing and exploiting germplasm for plant‐breeding programs. We report, for the first time, experiments with Fragaria chiloensis（l.）duch. and the estimation of the effects of response to salinity stress（0, 30, and 60 mmol NaCl/l） in terms of these pigments content and gas exchange. It is shown that both pigments（which interestingly, themselves show a high correlation） give a good indication of stress response. Both pigments can be accurately predicted using spectral reflectance indices（sRI）;however, the accuracy of the predictions was slightly improved using multilinear regression analysis models and genetic algorithm analysis. specifically for chlorophyll content, unlike other species, the use of published sRI gave better indications ofstress response than Normalized difference Vegetation *** effect of salt on gas exchange is only evident at the highest concentration and some sRI gave better prediction performance than the known Photochemical Reflectance Index. This information will therefore be useful for identifying tolerant genotypes to salt stress for incorporation in breeding programs.

关键词： Gas exchange high‐throughput phenotyping pigment phenomic photosynthesis reflectance spectral reflectance indices

secondary rectal linitis plastica caused by prostatic adenocarcinoma-magnetic resonance imaging findings and dissemination pathways:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Radiology 2024年第9期16卷 473-481页

作者： Andres Antonio labra Giancarlo schiappacasse Rolando Alfonso Cocio Jorge Tomás Torres Fernando Omar González Joaquin Alberto Cristi Marcela schultz department of Radiology Facultad de Medicina Clínica Alemana-Universidad del DesarrolloSantiago 7650568Región MetropolitanaChile department of Pathology Clínica Alemana de SantiagoSantiago 7650568Región MetropolitanaChile

BACKGROUNd secondary rectal linitis plastica(RlP)from prostatic adenocarcinoma is a rare and poorly understood form of metastatic spread,characterized by a desmoplastic response and concentric rectal wall infiltration with mucosal *** complicates endoscopic diagnosis and can mimic gastrointestinal *** case series underscores the critical role of magnetic resonance imaging(MRI)in identifying the distinct imaging features of RlP and highlights the importance of considering this condition in the differential diagnosis of patients with a history of prostate *** sUMMARY Three patients with secondary RlP due to prostatic adenocarcinoma presented with varied clinical *** first patient,a 76-year-old man with advanced prostate cancer,had rectal pain and *** showed diffuse prostatic invasion and significant rectal wall thickening with a characteristic"target sign"*** second,a 57-year-old asymptomatic man with elevated prostatespecific antigen levels and a history of prostate cancer exhibited rectoprostatic angle involvement and rectal wall thickening on MRI,with positron emission tomography/computed tomography PsMA confirming the prostatic origin of the metastatic *** third patient,an 80-year-old post-radical prostatectomy,presented with refractory *** revealed a neoplastic mass infiltrating the rectal *** all cases,MRI consistently showed stratified thickening,concentric signal changes,restricted diffusion,and contrast enhancement,which were essential for diagnosing secondary *** confirmed the prostatic origin of the neoplastic involvement in the *** Recognizing MRI findings of secondary RlP is essential for accurate diagnosis and management in prostate cancer patients.

关键词： Rectal linitis plastica Prostatic adenocarcinoma signet ring cell carcinoma Metastatic spread Magnetic resonance imaging Concentric wall infiltration Case report

Autoimmune complications and clinical outcomes of herpes simplex encephalitis in children: A case series

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 Tropical Medicine 2023年第5期16卷 232-238页

作者： Gül demet KayaÖzçora Elif söbü Türkan UygurŞahin Enes salı Gonca Bektaş department of Pediatric Neurology Health Sciences FacultyHasan Kalyoncu UniversityGaziantepTurkey department of Pediatric Endocrinology Kartal Dr.Lutfi Kirdar City HospitalIstanbulTurkey department of Pediatric Neurology Bezmialem University Medical FacultyIstanbulTurkey department of Pediatric Infectious diseases Umraniye Research and Training HospitalIstanbulTurkey department of Pediatric Neurology Boston Children’s HospitalBostonUSA

Objective:To report the neurologic prognosis and autoimmune complications of 16 cases of childhood herpes simplex virus ***:The study was conducted atŞanlıurfa Training and Research Hospital,Turkey from June 2017 to August *** study included 16 pediatric patients aged between 6 months and 17 years(median age 77.7 months)who were diagnosed with herpes simplex virus type 1 encephalitis by pediatric infectious disease and pediatric neurology *** were followed using patient records,and interviews at the pediatric neurology clinic or via the *** and demographic data,received therapies,neurologic prognosis and complications were ***:Patients with and without autoimmune encephalitis were compared in terms of age,sex,symptom duration before treatment,initial cerebrospinal fluid protein,glucose,red blood count and white blood count but no significant difference was *** complications were seen in four patients.N-methyl-d-aspartate encephalitis was observed in three patients and choreoathetosis was seen in one *** average follow-up period was 48.3 ***-five percent of the patients were receiving multiple antiepileptic drug(AEd)treatment,43.8%were receiving single AEd treatment and 31.3%were not receiving AEd treatment at the end of the *** disability was observed in 12.5%and drug-resistant epilepsy was observed in 6.3%who had autoimmune ***:seizures and movement disorders were controlled with immunotherapy and autoantibodies should be studied *** should be started early upon recognition of autoimmune complications through follow-up by measuring autoantibody levels and clinical examination *** prevention and curative treatment modalities are needed to avoid herpes simplex virus encephalitis complications.

关键词： Herpes simplex virus encephalitis Autoimmune complications Epilepsy Children steroid Prognosis

Applicability of large-ion lithophile and high field strength element basalt discrimination diagrams

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 digital Earth 2018年第7期11卷 752-760页

作者： X.l.liu Q.Zhang W.C.li F.C.Yang Y.Zhao Z.li s.T.Jiao J.R.Wang N.Zhang s.s.Wang W.F.Chen Z.J.Pan J.Yang X.l.du Faculty of land and Resource Engineering Kunming University of Science and TechnologyKunmingPeople’s Republic of China Institute of Geology and Geophysics Chinese Academy of SciencesBeijingPeople’s Republic of China Chengdu Geological survey Center of China Geological survey ChengduPeople’s Republic of China school of Earth science Lanzhou UniversityLanzhouPeople’s Republic of China

Basalt discriminant diagrams have been used to identify the tectonic setting of basaltic magmatism since the 1970s and have played an important role in reconstructing paleotectonic ***,the significant increase in the availability of geochemical data has led to a reassessment of these diagrams,suggesting that some of the tectonic settings indicated by these diagrams are not ***,we use a database of global ocean island basalt(OIB),mid-ocean ridge basalt(MORB),and island arc basalt(IAB)geochemistry to propose a series of new tectonic discriminant diagrams based on the ratios of large-ion lithophile elements(lIlEs)to high field strength elements(HFsEs).These new diagrams indicate that the lIlE can be used to differentiate OIB,MORB,and IAB samples,meaning that lIlE/HFsE ratios can discriminate between these basalts that form in different tectonic *** new diagrams can correctly assign samples to OIB,MORB,and IAB categories more than 85%of the time,with the discrimination between OIB and MORB having an accuracy of slightly less than 85%.

关键词： Basalt lIlE HFsE discrimination diagram geochemistry

Plant species diversity along an Altitudinal Gradient of Bhabha Valley in Western Himalaya

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Mountain science 2008年第2期5卷 157-177页

作者： Amit Chawla s.Rajkumar K.N.singh Brij lal R.d.singh A.K.Thukral Bioresource development Unit Institute of Himalayan Bioresource Technology (CSIR) Palampur Himachal Pradesh-176 061 India department of Botanical & Environmental sciences Guru Nanak Dev University Amritsar-143 005 India

The present study highlights the rich species diversity of higher plants in the Bhabha Valley of western Himalaya in India. The analysis of species diversity revealed that a total of 313 species of higher plants inhabit the valley with a characteristic of moist alpine shrub vegetation. The herbaceous life forms dominate and increase with increasing altitude. The major representations are from the families Asteraceae, Rosaceae, lamiaceae and Poaceae, suggesting thereby the alpine meadow nature of the study area. The effect of altitude on species diversity displays a hump-shaped curve which may be attributed to increase in habitat diversity at the median ranges and relatively less habitat diversity at higher altitudes. The anthropogenic pressure at lower altitudes results in low plant diversity towards the bottom of the valley with most of the species being exotic in nature. Though the plant diversity is less at higher altitudinal ranges, the uniqueness is relatively high with high species replacement rates. More than 90 % of variability in the species diversity could be explained using appropriate quantitative and statistical analysis along the altitudinal gradient. The valley harbours 18 threatened and 41 endemic species, most of which occur at higher altitudinal gradients due to habitat specificity.

关键词： Plant species diversity threatened species altitudinal gradient flora Bhabha Valley western Himalaya India

基于多频段多任务编解码模型的心电图基准点联合检测

在线全文

学校读者我要写书评

暂无评论

控制理论与应用 2024年第8期41卷 1451-1458页

作者：李磊廖桂鑫蔡瑞涵李珍妮吕俊广东工业大学自动化学院广东广州510006

基准点检测是心电图(ECG)诊断分析的基础.但是, ECG具有波形变异性,且经常受到各种伪迹和噪声的干扰,使得基准点检测精度受限.针对该问题,本文首先构建概率图模型,分析各频带ECG成分与基准点检测任务之间的推断关系.然后,在此概率图模... 详细信息

基准点检测是心电图(ECG)诊断分析的基础.但是, ECG具有波形变异性,且经常受到各种伪迹和噪声的干扰,使得基准点检测精度受限.针对该问题,本文首先构建概率图模型,分析各频带ECG成分与基准点检测任务之间的推断关系.然后,在此概率图模型的启发下提出了一种多频段多任务编解码网络.该网络先分别对不同频段的ECG成分进行一维卷积变换提取特征.然后,通过时域卷积模组学习各频段特征的注意力掩码以抵御噪声.最后,利用多分支关联结构,实现多个ECG基准点的联合检测.在MIT-BIH QT和lUdB数据集上的五重交叉验证实验结果表明:所提方法能够有效地提高ECG基准点的检测精度,达到了当前最优的水平.

关键词：心电图基准点检测编解码模型时域卷积神经网络

COMPARIsON OF FATIGUE ANd CREEP BEHAVIOR BETWEEN 2d ANd 3d-C/siC COMPOsITEs

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica sinica(English letters) 2004年第4期17卷 569-574页

作者： d.Han s.R.Qiao M.li J.T.Hou X.J.Wu Ultra-high-temperature Thermostructural Composites laboratory Northwestern Polytechnical UniversityXi'an 710072 China

The differences of tension-tension fatigue and tensile creep characters of 2d-C/siC and 3d-C/siC composites have been scrutinized to meet the engineering needs. Experiments of tension-tension fatigue and tensile creep are carried out under vacuum high temperature condition. All of the high temperature fatigue curves are flat; the fatigue curves of the 2d-C/siC are flatter and even parallel to the horizontal axis. While the tension-tension fatigue limit of the 3d-C/siC is higher than that of the 2d-C/siC, the fiber pullout length of the fatigue fracture surface of the 3d-C/siC is longer than that of the 2d-C/siC, and fracture morphology of the 3d-C/siC is rougher, and pullout length of the fiber tows is longer. At the same time the 3d-C/siC has higher tensile creep resistance. The tensile curve and the tensile creep curve of both materials consist of a series of flat step. These phenomena can be explained by the non-continuity of the damage.

关键词： 2d-C/siC 3d-C/siC vacuum high-temperature tensile creep fatigue

A pre-compensation method of the systematic contouring error for repetitive command paths

在线全文

学校读者我要写书评

暂无评论

Frontiers of Mechanical Engineering 2015年第4期10卷 367-372页

作者： d. l. ZHANG Y. H. CHEN Y. P. CHEN state Key laboratory of digital Manufacturing Equipment andTechnology School of Mechanical Science and Engineering HuazhongUniversity of Science and Technology Wuhan 430074 China

For a repetitive command path, pre-compen- sating the contouring error by modifying the command path is practical. To obtain the pre-compensation value with better accuracy, this paper proposes the use of a back propagation neural network to extract the function of systematic contouring errors. Furthermore, by using the extracted function, the contouring error can be easily pre- compensated. The experiment results verify that the proposed compensation method can effectively reduce contouring errors.

关键词： contouring error pre-compensation motioncontrol system back propagation (BP) neural network

Breast Calcifications and Histopathological Analysis on Tumour detection by CNN

在线全文

学校读者我要写书评

暂无评论

Computer systems science & Engineering 2023年第1期44卷 595-612页

作者： d.Banumathy Osamah Ibrahim Khalaf Carlos Andrés Tavera Romero P.Vishnu Raja dilip Kumar sharma department of Computer science and Engineering Paavai Engineering CollegePachalNamakkal637018Tamil NaduIndia Al-Nahrain University Al-Nahrain Nanorenewable Energy Research CenterBaghdadIraq COMBA R&d laboratory Faculty of EngineeringUniversidad Santiago de Cali76001CaliColombia department of Computer science and Engineering Kongu Engineering CollegePerundurai638060Tamil NaduIndia department of Mathematics Jaypee University of Engineering and TechnologyGuna473226Madhya PradeshIndia

The most salient argument that needs to be addressed universally is Early Breast Cancer detection(EBCd),which helps people live longer *** Computer-Aided detection(CAds)/Computer-Aided diagnosis(CAdx)sys-tem is indeed a software automation tool developed to assist the health profes-sions in Breast Cancer detection and diagnosis(BCdd)and minimise mortality by the use of medical histopathological image classification in much less *** paper purposes of examining the accuracy of the Convolutional Neural Network(CNN),which can be used to perceive breast malignancies for initial breast cancer detection to determine which strategy is efficient for the early iden-tification of breast cell malignancies formation of masses and Breast microcalci-fications on the *** we have insufficient data for a new domain that is desired to be handled by a pre-trained Convolutional Neural Network of Residual Network(ResNet50)for Breast Cancer detection and diagnosis,to obtain the discriminative localization,Convolutional Neural Network with Class Activation Map(CAM)has also been used to perform breast microcalcifications detection tofind a specific class in the Histopathological *** test results indicate that this method performed almost 225.15%better at determining the exact location of disease(discriminative localization)through breast microcalci-fications ***50 seems to have the highest level of accuracy for images of Benign Tumour(BT)/Malignant Tumour(MT)cases at 97.11%.ResNet50’s average accuracy for pre-trained Convolutional Neural Network is 94.17%.

关键词： Computer-Aided detection breast cancer detection convolutional neural network class activation map computer-aided diagnosis

Use of two fungal species to induce agarwood resin formation in Gyrinops walla

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2019年第2期30卷 721-726页

作者： s.M.C.U.P.subasinghe H.I.d.Hitihamu K.M.E.P.Fernando department of Forestry and Environmental science University of Sri Jayewardenepura department of Botany University of Sri Jayewardenepura

Gyrinops walla Gaertn. is the only species growing in sri lanka that belongs to the agarwood family,Thymelaeaceae. Although agarwood resin induction and extraction from Aquilaria species of the same family have been practised for many decades in southeast Asian region,the ability of producing agarwood resins in G. walla was discovered recently. since previous studies were on agarwood resins formed due to natural causes, the present study was conducted to identify the potential fungal species that are capable of artificially inducing agarwood resin formation in G. walla. since this is the first ever study conducted on artificial inducement of agarwood resin formation in ***, Aspergillus niger and Fusarium solani were selected owing to their high abundance in the naturally formed agarwood resinous tissues collected from 25 G. walla *** fungal species were separately grown in yeast extract glucose agar and used to inoculate healthy G. walla trees under aseptic conditions. Three holes were made for each tree and 2 g of fungal culture including the medium were placed in each hole. Tissue discoloration, characteristic aroma, resin content and resin constituents were checked at10 cm intervals above and below the inoculation points for a period of 1 year. Results revealed that tissue discoloration and resin content were higher in the trees inoculated with A. niger. Other than at 10 cm above and below the inoculation points, samples collected at all locations had significantly higher resin contents when inoculated with A. niger compared to F. solani. sixteen agarwood resin constituents, which were also recorded in Aquilaria species, were identified from the discolored tissues using GC–Ms analysis. Jinkohol, agarospirol and 2(2-phenyl)chromone derivatives were found in all discolored tissues collected at 10-cm intervals of the trees inoculated with both fungi. b-seline, c-eudesmol and valerenal were found in nine of 10 sample points on the stem. c-Elemene was recor

关键词： Gyrinops walla Agarwood resin Aspergillus niger Fusarium solani Inoculation