Results 31 to 40 of about 12,631 (178)
Zhejiang Daxue xuebao. Lixue ban, 2005 采用膨胀颗粒污泥床(EGSB)处理涤纶仿真丝绸印染废水，通过污泥负荷和水力负荷的递增来启动反应器，从活性污泥性状和反应器性能两方面考察启动过程.活性污泥依次经历絮状、膨胀、细粒化和成熟颗粒四个阶段，反应器性能与此相应变化，有机物去除率和产气率逐渐提高且趋于稳定.结果表明，EGSB处理涤纶仿真丝绸印染废水的启动过程用了 50 d左右，启动后形成的颗粒污泥床层占反应器有效容积的25% 和污泥量的65% 左右，COD去除率为57% ~64%，产气率为0.12~0.17 m3 • (kgCOD)-1 ...
GUANBao-hong(官宝红) +3 more
doaj +1 more source
Impact of insulin resistance on pregnancy outcomes in patients with unexplained recurrent implantation failure and the interventional effect of metformin [PDF]
Objective To investigate the impact of insulin resistance (IR) on pregnancy outcomes in patients with unexplained recurrent implantation failure (URIF) and evaluate the potential therapeutic value of metformin.
Dan MO +4 more
core +1 more source
GnRH激动剂长方案中不同促排卵药物对卵巢慢反应分娩结局的影响 [PDF]
, 2020 【目的】探讨促性腺激素释放激素激动剂（GnRH-a）方案中卵巢储备正常患者发生卵巢慢反应后添加含黄体生成素（LH）活性的不同药物对体外受精或卵胞浆内单精子注射-胚胎移植（IVF/ICSI-ET）助孕结局的影响。【方法】纳入卵巢储备功能正常、采用GnRH激动剂方案促排卵并发生卵巢慢反应的不孕患者，共872例。按照添加不同药物分为小剂量人绒毛膜促性腺激素（hCG）组、人重组黄体生成素（rLH）组及人绝经期促性腺激素（HMG）组，回顾性分析3组的实验室参数和临床结局。【结果 ...
唐小饰, 李予, 温灿鑫, 潘萍
core
单中心 232例非免疫性胎儿水肿超声特征及病因学分析 [PDF]
, 2022 目的探讨非免疫性胎儿水肿（NIHF）的超声特征及病因学分布情况。方法纳入2012年12月至2019年1月就诊于中山大学附属第一医院产前超声诊断为NIHF病例232例，回顾性分析其超声特征及病因学分布情况。结果① NIHF最常见于TTTS Ⅳ期（50/232，21.55%）；最常见超声水肿的部位为皮肤水肿（159/232，68.53%）；最常合并的畸形为心血管系统异常（15/232，6.47%）。NIHF的活产率为31.47%。② 185例行产前遗传学检测的病例中，异常检出率40.54%（75/185 ...
刘婧宇 +5 more
core +1 more source
Rare Metals, EarlyView.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
wiley +1 more source
食物质量对盔形溞( Daphnia galeata )和脆弱象鼻溞( Bosmina fatalis )生活史参数的影响
, 2019 枝角类体内氮磷比与生活史策略的选择密切相关，大型枝角类通常体内含磷量高、个体生长快、生殖率高，而小型枝角类体内含磷量低，个体生长相对较慢、生殖率低.由于大型枝角类对磷的需求比较高，我们假设大型枝角类生活史各参数对食物磷缺乏比小型枝角类更为敏感.本研究比较分析了食物碳磷比对流溪河水库两种枝角类（盔型溞（ Daphnia galeata ）和脆弱象鼻溞（ Bosmina fatalis ））生活史各参数的影响.实验设计了3个食物质量处理组：高磷（碳：磷=105）、中磷（400）和低磷（1450 ...
欧玉玲 +7 more
semanticscholar +1 more source
Rare Metals, EarlyView.ABSTRACT Fluxgate sensors with Co‐rich amorphous microwires, widely used for their low noise in magnetic field measurements, encounter significant challenges in high‐temperature environments such as well drilling and geological exploration. Prolonged thermal aging degrades the performance of Co‐rich amorphous microwires, resulting in increased noise ...
Lining Pan +10 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
On the Damage Tolerance of Diffusion Bonded Titanium–Aluminum Phase Biomimetic Composites
Rare Metals, EarlyView.ABSTRACT The biomimetic design principles of natural structures involve the strategic integration of stiff and compliant phases to synergistically enhance strength and toughness. Its evolutionary refined natural armor, characterized by a specialized microarchitecture, enables superior damage tolerance.
Shuai Tong +10 more
wiley +1 more source
反复种植失败患者子宫内膜“种植窗”时期催产素受体的表达 [PDF]
, 2020 目的研究催产素受体（OTR）在反复种植失败（RIF）妇女的“种植窗”时期子宫内膜组织中的表达及其与RIF的关系，并了解正常妇女月经周期子宫内膜催产素受体的表达。方法采用免疫组化法和RT-PCR法检测OTR在正常妇女月经周期增殖早、中、晚期和分泌早、中、晚期子宫内膜组织及RIF妇女分泌中期子宫内膜组织的表达情况，其中正常妇女分泌中期10例，其他5个时期各3例；RIF妇女分泌中期10例。结果RIF妇女组子宫内膜组织分泌中期OTR蛋白质和mRNA显著高于正常妇女组（P < 0.05 ...
习羽 +4 more
core