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991.
Fangzhong Hu Xinxin Cheng Zixia Niu Xiaobing Yang Dan Li Lei Wan Junxiao Li Bin Liu Xiaomao Zou Huazheng Yang Bin Li 《Journal of heterocyclic chemistry》2015,52(3):793-801
A series of 3‐phenyl benzo[d][1,2,3]triazin‐4(3H)‐one derivatives were synthesized through the condensation of phenol E and alkyl (alkenyl, alkynyl) chlorides (bromides, iodide) or alkyl chloroacetates or N‐alkyl chloroacetamides using K2CO3 as the acid acceptor in N,N‐dimethylformamide. Phenol E was prepared from starting material, 5‐amino‐2‐chloro‐4‐fluorophenyl ethyl carbonate, in four steps involving in amidation, reduction, diazotization, and deprotecting‐group reaction. The herbicidal activities of the title compounds were tested against two dicotyledonous plants and two monocotyledonous plants, in which some of them exhibited high herbicidal activities against two dicotyledonous plants in preemergence and postemergence treatments. Moreover, when the dosage was decreased to 180 and 90 g/ha, compounds F1 , F8 , and F9 showed highly selective inhibitory activities against amaranth pigweed, alfalfa, asteraceae, field sowthistle, morning glory, purslane, and velvetleaf in postemergence treatment but had no herbicidal efficacy on rape except F1 , suggesting that it be possible to find a kind of herbicides to inhibit dicotyledonous weeds in the field of dicotyledonous crops with the same genus as aforementioned weeds. 相似文献
992.
Han Huiyun Li Xingliang Han Mengmeng Liu Jingmin Yan Dan Yang Zhenjun Shang Ce Feng Yali Zhang Shumin 《Optical Review》2018,25(2):237-243
Optical Review - We have numerically investigated the required minimum cavity dispersion (RMCD) for obtaining stable pulses in net normal dispersion, graphene mode-locked, Yb-doped fiber lasers... 相似文献
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994.
The Soreq Applied Research Accelerator Facility (SARAF): Overview,research programs and future plans
Israel Mardor Ofer Aviv Marilena Avrigeanu Dan Berkovits Adi Dahan Timo Dickel Ilan Eliyahu Moshe Gai Inbal Gavish-Segev Shlomi Halfon Michael Hass Tsviki Hirsh Boaz Kaiser Daniel Kijel Arik Kreisel Yonatan Mishnayot Ish Mukul Ben Ohayon Michael Paul Amichay Perry Hitesh Rahangdale Jacob Rodnizki Guy Ron Revital Sasson-Zukran Asher Shor Ido Silverman Moshe Tessler Sergey Vaintraub Leo Weissman 《The European Physical Journal A - Hadrons and Nuclei》2018,54(5):91
995.
Xue Xi Ma Qianli Dong Xiangting Li Dan Yu Wensheng Wang Jinxian Liu Guixia 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2019,93(12):2444-2451
Russian Journal of Physical Chemistry A - A new nanostructure of luminescent-magnetic-electrical trifunctionality Janus nanofibers with [Fe3O4/polyvinyl pyrrolidone... 相似文献
996.
Cheng Jiang Lisha Zhao Chuanwei Xin Yu Dong Jie Shen Zhongni Xia Dan Shou Gonghua Li 《Biomedical chromatography : BMC》2022,36(2):e5255
The allergic reaction (AR) of Chinese herbal injection (CHI) has become one of the most noticeable focuses of public health in China. However, it still remains a considerable controversy as to whether low-molecular-weight components in CHI have potential sensitization. In this study, the relationship between AR and low-molecular-weight component profile of Shenmai injection was explored by an interdisciplinary technology integrating real-world evidence and ultra-performance liquid chromatography–quadrupole time-of-flight mass spectroscopy (UPLC–Q-TOF-MS). The AR information of hospitalized patients was obtained by comprehensively analyzing real-world evidence from January 2015 to June 2019 at two Chinese hospitals. The UPLC–Q-TOF-MS was exploited to systematically investigate the low-molecular-weight component profile with 50–1500 m/z mass range, and 3725 MS1 peaks were detected. The optimized partial least squares discriminant analysis model was established to map the influence of low-molecular-weight components on AR. The results of this study showed that high levels of organic acids administered intravenously might be a potential risk factor for inducing AR. By using this method, Shenmai injection with high AR risk could be recognized precisely with 100% accuracy before clinical use. 相似文献
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We describe the static charge susceptibility and correlation function of the charge density in the twodimensional t-J-V model based on the method of equations of motion for the relaxation functions of the Hubbard operators. We obtain the dependence of the susceptibility and correlation function on the hole concentration and temperature. Charge density waves can develop if the intersite Coulomb interaction is sufficiently strong. 相似文献
1000.
AbstractThe continuing studies on the fruits of Stauntonia brachyanthera led to the isolations of 6 normal and nor-oleanane triterpenoids, including two new compounds, brachyantheoraside B10 (1) and brachyantheraside C1 (2). Compounds 1–3 showed inhibitory activity on lipopolysaccharide (LPS)-induced nitric oxide production in RAW 264.7 macrophages with the IC50 values of 27.04, 26.22, and 21.41?μM, respectively, which were all stronger than that of indomethacin. The study not only revealed a new type of nor-oleanane triterpenoids, but also confirmed the anti-inflammation abilities of three type nor-oleanane triterpenoids as the inhibitors of NO production. 相似文献