Results 31 to 40 of about 1,605,069 (129)
Photonic porous silicon as a pH sensor [PDF]
, 2014 Chronic wounds do not heal within 3 months, and during the lengthy healing process, the wound is invariably exposed to bacteria, which can colonize the wound bed and form biofilms. This alters the wound metabolism and brings about a change of pH. In this
Zhao, Wei +14 more
core +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Developing advanced electrocatalysts for urea synthesis is pivotal to alleviating environmental burdens as well as advancing sustainability in the industrial and agricultural sectors, yet untargeted catalyst screening still suffers from the notorious drawbacks of being time‐consuming, labor‐intensive, and inefficient.
Xinyuan Yang +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The composition and structural characteristics of metacomposites are crucial for tuning their negative electromagnetic parameters; however, the lack of a clear structure–property relationship severely limits their application in dielectric and magnetic fields.
Chunyuan Deng +9 more
wiley +1 more source
, 2009 采用恒温摇床培养方法,研究了不同营养源(处理1:尿素+乙酸钠;处理2:亚硝酸钠+乙酸钠;处理3:硝酸钾+乙酸钠;处理4:碳酸氢铵;处理5:硫酸铵+碳酸氢钠;处理6:磷酸二氢钾+碳酸氢钠)对复合垂直流人工湿地基质生物膜培养液pH值的影响,探讨了pH值变化过程中生物膜脱氢酶活性和多糖含量的变化规律。结果表明,处理1、4以及5中培养液pH值先下降然后再上升,但下降和上升的幅度不同。处理2、3以及6中培养液pH值添加碳源前在7.30~7.40之间缓慢变化,添加碳源后均上升至9.00左右 ...
张金莲 +3 more
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Zhongguo shiyan zhenduanxue, 2009 目的探讨与研究螺旋CT灌注成像对肺结核病变的诊断价值。方法选择肺结核患者25例,对比观察肺恶性肿瘤患者25例,行螺旋CT灌注扫描,计算肺部病灶的灌注量（perfusion volume,PV）、血容量（blood volume,BV）、增强峰值（peak height,PH）和对比剂的平均通过时间（mean transit time,MTT）的数值。结果结核PV、BV、PH均值分别为12.15±4.12 ml.min-1.ml-1、10.36±5.87 ml/100 g、18.21±5.58 HU ...
许国宇 +4 more
doaj
Enhanced Dual‐Modality CT Imaging for Evaluating Hematogenous Metastasis During Photothermal Therapy
Rare Metals, Volume 45, Issue 7, July 2026.Dual‐modality computed tomography (CT) nanoprobes, BPP, are developed for real‐time microscopic monitoring of microvessel morphology and vascular permeability to provide predictive insights into cancer progression and metastasis. ABSTRACT Dynamic assessment of hematogenous metastasis is crucial for the tumor during photothermal therapy.
Yanhong Sun +7 more
wiley +1 more source
Gongye shui chuli, 1983 我国炼油、化纤、化肥等工厂的循环冷却水化学处理广泛使用含聚磷酸盐和有机膦酸盐的配方.通常认为,这类七十年代开发的冷却水处理方案能在碱性pH值范围内操作,而不必控制循环水的pH值,因此被泛称为碱性处理方案.实际上,从七十年代以来的运转实践和实验室研究资料证实,为了获得良好的缓蚀阻垢和控制微生物效果,在运行中控制循环水的pH值仍然是必须的.尽管某些全有机系配方声称可以不控制pH值,但采用还不普遍,还缺少必要的公认的效果数据.
范嗣英, 庞名立
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Lignin is a natural non‐toxic polyphenolic macromolecule, which shows inherent antioxidant and broad‐spectrum antibacterial activities. However, due to the low content and the high bond dissociation energy of phenolic hydroxyl groups (Ar‐O·H), its antioxidant and antibacterial activities are relatively weak, which limits its application as a ...
Meiling Han +10 more
wiley +1 more source
THE pH VALUE CHANGES IN THE PERIODONTAL POCKETS [PDF]
, 1996 Many studies have been done of the pH values in periodontal pockets These studies have suggested that the pH value was influenced by the condition of the surrounding tissue.
SOEDA, Wataru +3 more
core +1 more source
Shuitu Baochi Xuebao, 2004 不同配比护坡营养基材模拟试验表明．护坡营养基材pH值随着凝固时间的延长而下降，并逐渐趋于稳定，不同配比的护坡营养基材pH值稳定的最短时间不同。影响护坡营养基材pH值变化的主要因素有水泥的掺入量、基质土壤类型、成孔材料添加比例等。研究结果表明，水泥掺入量在基质土壤的2％～4％范围内对植物生长是安全的。在设计护坡营养基材配方方面，以城市垃圾土为基质土壤，添加3％的稻草粉有利于降低护坡基材pH值和促进植物生长。
王昌金 谢德体 李冰 李焕秀 李廷轩 李绍才
doaj +2 more sources