Gongye shui chuli, 2011 海上油气田传统的生产水处理方法采用水力漩流器，能耗高，生产水泵维修成本高。近年来出现了采用旋转离心分离和气浮分离为工作原理的新型油田生产水处理设备，大幅度降低了生产水的含油量。装置还具有能耗低、操作简单、成本低、占地面积小等一系列特点。
谢协民
doaj
不同氮素用量对高肥力稻田水稻-土壤-水体氮素变化及环境影响分析
Shuitu Baochi Xuebao, 2006 研究了分次施氮条件下不同氮紊用量对高肥力稻田水稻-土壤-水体含氮量的变化，结果表明：不同施氮水平与植物吸氮置、土壤含氮量以及田面水、渗漏水全氮含量之间具有很强的相关性。但总的来说，氮素利用率不高，有70％～80％左右的化肥氮排入到环境中，对土壤．水体和大气造成污染。在移栽期时，氮紊损失严重。土壤古氮量在水稻生长的前3个时期变化不大，但最终土壤氮素效应明显，低于150kg／hm^2的施氮量不利于土壤肥力的保持。同时用差值法估算出化肥氮对土壤氮的贡献量占化肥氮排入环境量的比例为30％～40 ...
汪华, 杨京平, 金洁, 孙军华
doaj
[Effects of polyvinyl alcohol-boric acid-based functionalized hydrogels on HSFs and HaCaT cells]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiSong W +13 more
europepmc +1 more source
[A real-world study of clinical cure in children with HBeAg-positive chronic hepatitis B from the Guangxi region]. [PDF]
Zhonghua Gan Zang Bing Za ZhiLyu RY +7 more
europepmc +1 more source
[Determination of 26 herbicide residues in soil， sediment， and surface water samples using modified QuEChERS method combined with ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuZhao L, Ma L, Huang LQ, Chen JB, Zhu WF.
europepmc +1 more source
[Quantitative Assessment of Microvascular Changes in Diabetic Retinopathy and Their Association With Blood-Retinal Barrier Impairment]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanLei Y, Lü H, Zhou Q, Tian M, Cao Y.
europepmc +1 more source
[Liquid-liquid interface synthesized covalent organic framework films for efficient extraction of okadaic acid from seawater]. [PDF]
Se PuZhang WM, Fang M, Zhang L.
europepmc +1 more source
Shuitu Baochi Xuebao[目的] 坡地改梯田是黄土塬区重要的水土保持和农业措施,明确梯田侧壁(梯壁)对梯田土壤水分空间分布的影响有助于保持梯田水分,提高梯田生产力。[方法] 通过对黄土塬区典型人工高坡(梯壁高5 m)梯田不同位置土壤取样测定含水量和土壤物理化学性质,分析梯田土壤水分的空间分布特征和影响因素。[结果] 随着距梯壁距离的增加,梯田0—300 cm土层土壤储水量从15.9 mm增加至328.6 mm,呈显著上升趋势;梯壁蒸发量从318.0 mm逐渐降低至83.4 mm;梯面宽为300 cm时 ...
白晨赟 +5 more
doaj
[A review of research progress in integrated traditional Chinese and Western Medicine for liver diseases]. [PDF]
Zhonghua Gan Zang Bing Za ZhiZhang Q +6 more
europepmc +1 more source
[A population-based survey of myopia on primary school students in an administrative district, 2019 to 2024]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanYang M +8 more
europepmc +1 more source