Results 21 to 30 of about 6,819 (111)

A Hilbert-type integral inequality with the homogeneous kernel of - 4-order(一个-4齐次核的Hilbert型积分不等式)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2009
通过引入双参数及应用权函数的方法,建立一个核为-4齐次的Hilbert型积分不等式及等价式,并证明其常数因子为最佳值.作为应用,给出其逆向形式及一些特殊结果.
GEXiao-kui(葛晓葵)
doaj   +1 more source

On the reverse Hardy-type integral inequalities with multi-parameter(关于逆向的参量化Hardy型积分不等式)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2010
应用权函数与实分析的方法,引入两对共轭指数与一个独立参数,建立若干逆向、推广的Hardy型积分不等式,并证明其常数因子为最佳值,还考虑了其等价式及若干特殊结果.
YANGBi-cheng(杨必成)
doaj   +1 more source

Assessment of risk for pre‐eclampsia at mid‐gestation to define subsequent care

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 6, Page 694-702, June 2025.
ABSTRACT Objective To stratify pregnancy care based on the estimated risk of pre‐eclampsia (PE) from screening at 19–24 weeks' gestation by combinations of maternal risk factors, estimated fetal weight (EFW), mean arterial pressure (MAP) and uterine artery pulsatility index (UtA‐PI).
S. Adjahou   +5 more
wiley   +1 more source

Role of low‐impact‐factor journals in conservation implementation

open access: yesConservation Biology, Volume 39, Issue 2, April 2025.
Abstract Academic review, promotion, and tenure processes place a premium on frequent publication in high‐impact factor (IF) journals. However, conservation often relies on species‐specific information that is unlikely to have the broad appeal needed for high‐IF journals.
Jonathan J. Choi   +8 more
wiley   +1 more source

Using explainable machine learning methods to evaluate vulnerability and restoration potential of ecosystem state transitions

open access: yesConservation Biology, Volume 38, Issue 3, June 2024.
Abstract Ecosystem state transitions can be ecologically devastating or be a restoration success. State transitions are common within aquatic systems worldwide, especially considering human‐mediated changes to land use and water use. We created a transferable conceptual framework to enable multiscale assessments of state resilience and early warnings ...
John T. Delaney, Danelle M. Larson
wiley   +1 more source

A Hilbert-type integral inequality with the kernel of hyperbolic secant function(一个核为双曲正割函数的Hilbert型积分不等式)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2013
引入Γ-函数等特殊函数,利用权函数方法和实分析技巧,建立一个核为双曲正割函数的Hilbert型积分不等式及其等价式,证明了它们的常数因子是最佳值,并通过取特殊的参数值,得到一些有意义的结果.
LIUQiong(刘琼)   +1 more
doaj   +1 more source

On a Hilbert-type integral inequality with the homogeneous kernel of 0-degree(一个含零齐次核的Hilbert型积分不等式)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2011
引进一个零齐次混合核,利用分析的方法和不等式理论,建立了 一个含参量且具有最佳常数因子的Hilbert型积分不等式及其等价形式.
HEBing(和炳)
doaj   +1 more source

外周血粒细胞集落刺激因子、肿瘤坏死因子-α水平对未足月胎膜早破并宫内感染的诊断价值

open access: yesZhongguo shiyan zhenduanxue, 2022
目的 分析外周血粒细胞集落刺激因子(G-CSF)、肿瘤坏死因子-α(TNF-α)水平对未足月胎膜早破(PPROM)并宫内感染的诊断价值。方法 选取2018年12月——2020年12月天津市北辰区中医医院来院就诊的胎膜早破患者90例(研究组),另选取同期孕检的正常孕妇90例(对照组)。检测并对比2组研究对象外周血G-CSF和TNF-α水平。研究组患者根据是否发生宫内感染再分为感染组和未感染组,比较感染组和未感染组患者外周血G-CSF和TNF-α水平及其他临床资料 ...
方雪, 马莱超, 隋红梅
doaj  

子宫肌瘤组织中SULT1A3、ERα、ERβ水平检测及其对子宫肌瘤切除术预后预测价值分析

open access: yesZhongguo shiyan zhenduanxue, 2021
目的检测子宫肌瘤组织中硫酸基转移酶基因1A3(SULT1A3)、雌激素受体α(ERα)、雌激素受体β(ERβ)表达水平,并分析其对子宫肌瘤切除术预后的预测价值。方法选取2017年1月至2018年1月湖北省妇幼保健院子宫肌瘤患者335例,均经子宫肌瘤切除术治疗,采用免疫组化染色、Western blot检测子宫肌瘤组织、正常子宫肌层组织中SULT1A3、ERα、ERβ表达;随访3年,根据预后情况将患者分为良好组、不良组,比较良好组、不良组子宫肌瘤组织中SULT1A3、ERα ...
高悦, 方琳, 周炫, 张弦
doaj  

淮山药等4种药食同源中药对免疫抑制小鼠免疫功能影响的对比研究

open access: yesZhongguo shiyan zhenduanxue, 2020
目的本实验选取淮山药、薏米、蒲公英、酸枣仁4种日常生活常见的食物,也是中药,研究其对小鼠的免疫调控作用。方法分别设计为空白组、模型组药、淮山药组(5.0g/kg)、薏米组(5.0g/kg)、蒲公英组(5.0g/kg)、酸枣仁组(5.0g/kg)。除正常组和模型组灌喂0.9%生理盐水外,其余各组每天灌喂1次相应受试药物,连续14天。给药第4天起,除正常组,其余隔3天注射1次环磷酰胺建立免疫抑制模型。测定增重率与免疫器官脏器指数、血清溶血素、免疫球蛋白、血清IL-12、IFN-γ ...
高长曌   +7 more
doaj  

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