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of 15
pro vyhledávání: '"Yang-Hong Zhang"'
Autor:
Yang-Hong Zhang, Jiao-Kai Chen
Publikováno v:
Advances in Mathematical Physics, Vol 2020 (2020)
We present errors of quadrature rules for the nearly singular integrals in the momentum-space bound-state equations and give the critical value of the nearly singular parameter. We give error estimates for the expansion method, the Nyström method, a
Externí odkaz:
https://doaj.org/article/f3883c46f595437eb5208dfac5f1ad41
Publikováno v:
Zhongguo youzhi, Vol 47, Iss 12, Pp 126-130 (2022)
为绿色高效制备生物柴油,利用L-天冬氨酸离子液体(\[Asp\]HSO4)联合猪胰脂肪酶催化油酸制备油酸甲酯,采用单因素实验探究了反应时间、醇酸物质的量比、\[Asp\]HSO4用量、猪胰脂肪酶用量
Externí odkaz:
https://doaj.org/article/34f17ccb4fa44e9cb270e344eda609db
Publikováno v:
Zhongguo youzhi, Vol 47, Iss 8, Pp 77-81 (2022)
为了开发环境友好型高效催化剂催化油酸酯化制备生物柴油,以L-谷氨酸与不同无机酸(硫酸、硝酸和磷酸)为原料合成了3种离子液体,对这3种离子液体催化油酸酯化反应制备油酸甲酯的酯
Externí odkaz:
https://doaj.org/article/c95468c20e3d45899b04648c96264bf1
Publikováno v:
In Journal of Asian Earth Sciences 1 June 2020 194
Autor:
Jun Xiong, Hui-Ting He, He-Yu Yang, Zhi-Gang Zeng, Cheng-Ran Zhong, Hang Shi, Meng-Ling Ouyang, Yuan-Yuan Tao, Yong-Long Pang, Yang-Hong Zhang, Bo Hu, Zi-Xiang Fu, Xiao-Lei Miao, Hai-Li Zhu, Gang Yao
Publikováno v:
The Journal of Organic Chemistry. 87:9488-9496
A new one-pot preparation of 4-tetrazolyl-3,4-dihydroquinazolines has been reported. The Ugi-azide reactions of 2-azidobenzaldehydes, amines, trimethylsilyl azide, and isocyanides produced azide intermediates without separation, which were treated wi
Akademický článek
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Publikováno v:
Geological Journal; Mar2021, Vol. 56 Issue 3, p1202-1235, 34p
Autor:
Huidong Sun, Hong Chang, Cunhua Shao, Jiangong Li, Yang Hong Zhang, Jianbo Lin, Yanhong Zheng
Publikováno v:
Clinical laboratory. 62(4)
BACKGROUND Presepsin is a new emerging inflammatory biomarker. The primary purpose of this study was to elucidate the predictive usability of presepsin for severity assessment in patients with acute cholangitis (AC). METHODS A total of 119 treatment-
Publikováno v:
Zhonghua yi xue za zhi. 91(39)
To describe the short-term outcomes of a non-pharmacological conservative approach to patients with LSS.This is a prospective consecutive case series with short-term follow-up of 21 consecutive patients who were diagnosed with LSS. Patients recruited
Publikováno v:
Ying yong sheng tai xue bao = The journal of applied ecology. 19(2)
Based on the past years vegetation cover, annual maximal grass yield and June-September mean modified soil-adjusted vegetation index (MSAVI) that were inversely deduced from the 10-day composite data of NOAA/AVHRR channels 1 and 2 and NDVI in 1982-20