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Chinese Journal of Chemistry 2002年第5期20卷 424-426页

作者： De‐Zhong Zhu xing‐min song Jian‐min Dou Ying Liu Da‐Qi Wang Department of Chemistry Liaocheng Teacher's College Liaocheng 252000

A novel two‐dimensional network dibenzo‐18‐crown‐6 (DB18‐C6) complex: [Na (DB18‐C‐6) (H 2 O) 2 ] [Na (DB18‐C‐6) (SCN) 2 ] has been isolated and characterized by elemental, IR and X‐ray diffraction analysis. The crystal structure belongs to monoclinic, space group P 2 1 /c with cell dimensions a = 1.06178(7), b = 1.40243(8), c = 3.03496(19) nm, β = 90.4220(10)°, V = 4.5292(5) nm 3 , Z=4, D calcd =1.351 g/ cm 3 , F (000) = 1936, R 1 = 0.0369, wR 2 = 0.0821. The most interesting feature in this structure is that complex cation and complex anion form a two‐dimensional network via τ‐τ stacking interactions, hydrogen bonds and electrostatic interactions.

关键词： τ‐τ stacking interactions hydrogen bonds crown ether DB18‐crown‐6 crystal structure

De novo synthesis of atropisomeric benzofurans via Cu/SPDO complex catalyzed asymmetric formal [3 + 2] annulation

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Science China Chemistry 2025年第01期 174-180页

作者： Fan-Xiao Meng xing-Yu Wang Ka Lu Ju-song Yang Fu-min Zhang Ai-Jun Ma Bao Du Yong-Qiang Tu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University School of Biotechnology and Health Sciences Wuyi University

Herein, the de novo synthesis of atropisomeric benzofurans through the Cu/spirocyclic-pyrrolidine-oxazoline(SPDO) complex catalyze asymmetric formal [3 + 2] cycloaddition between quinones and ynamides is explored, producing a range of structurally diverse axially chiral benzofurans in satisfactory yields with good to excellent enantioselectivities. Furthermore, density functional theory calculations were applied to explain the possible reaction mechanism.

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Extramedullary plasmacytoma with the uvula as first affected site:A case report

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World Journal of Clinical Oncology 2025年第1期16卷 53-58页

作者： Jing Yang Hui Peng Sheng-Ke Tu min Li Kui song Department of Hematology The First Affiliated Hospital of Jishou UniversityJishou 416000Hunan ProvinceChina Department of Pharmacy The First Affiliated Hospital of Jishou UniversityJishou 416000Hunan ProvinceChina

BACKGROUND Extramedullary plasmacytoma(EMP)represents one of the rarer forms of plasma cell malignancies,capable of impacting a variety of tissues and organs throughout the *** majority of EMP cases are predominantly found in the head and neck region,especially within the laryngopharynx,as well as in the gastrointestinal *** there have been documented instances of oropharyngeal involvement in EMP cases in the academic literature,it is important to note that EMP specifically affecting the uvula is exceedingly ***,it is noteworthy that over 60% of epithelial carcinomas in the upper respiratory tract and oropharynx tend to metastasize to the cervical lymph nodes,indicating a propensity for regional spread in these types of *** this context,we present a rare case of extramedullary plasmacytoma where the uvula served as the initially affected *** case emphasizes the need for heightened awareness among clinicians regarding such unusual comorbidities,as early recognition and diagnosis can significantly influence patient management and treatment *** addition,a review of the relevant literature is included to further educate and inform healthcare professionals about this rare presentation,ultimately aiming to enhance clinical understanding and improve patient care in similar *** SUMMARY A 51-year-old man was admitted to our hospital because of a slowly enlarging neck mass.A physical examination revealed a palpable left lymph node,and magnetic resonance imaging(MRI)of the oropharynx and the neck showed a soft tissue mass in the oropharynx and enlargement of multiple lymph nodes in the *** soft tissue mass was diagnosed as plasmacytoma by immunohistochemical *** immunoglobulins and bone marrow biopsy showed normal ***,we diagnosed that as EMP of the *** four cycles of adjuvant chemotherapy dominated by bortezomib,MRI reexamination showed a significant reduction of the mass

关键词： Extramedullary plasmacytoma Plasmacytoma Uvula Multiple myeloma Case report

A real-time detection and positioning method for small and weak targets using a 1D morphology-based approach in 2D images

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Light(Science & Applications) 2018年第1期7卷 1063-1071页

作者： min-song Wei Fei xing Zheng You Department of Precision Instrument Tsinghua UniversityBeijing 100084China State Key Laboratory of Precision Measurement Technology and Instruments Tsinghua UniversityBeijing 100084China Department of Mechanical Engineering University of CaliforniaBerkeleyCA 94720USA

A small and weak target detection method is proposed in this work that outperforms all other methods in terms of real-time *** is the first time that two-dimensional(2D)images are processed using only one-dimensional1D structuring elements in a morphology-based approach,enabling the real-time hardware implementation of the whole image processing method.A parallel image readout and processing structure is introduced to achieve an ultra-low latency time on the order of nanoseconds,and a hyper-frame resolution in the time domain can be achieved by combining the row-by-row structure and the electrical rolling shutter *** results suggest that the expected target can be successfully detected under various interferences with an accuracy of 0.1 pixels(1σ)under the worst sky night test condition and that a centroiding precision of better than 0.03 pixels(1σ)can be reached for static *** real-time detection method with high robustness and accuracy is attractive for application to all types of real-time small target detection systems,such as medical imaging,infrared surveillance,and target measurement and tracking,where an ultra-high processing speed is required.

关键词： high robustness and accuracy 1D morphology-based approach row-by-row structure real-time detection method small and weak target detection and positioning

Responses of Contrasting Rice (Oryza sativa L.) Genotypes to Salt Stress as Affected by Nutrient Concentrations

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Agricultural Sciences in China 2011年第2期10卷 195-206页

作者： ZHANG Zhen-hua LIU Qiang song Hai-xing RONG Xiang-min Abdelbagi M Ismail College of Resources and Environmental Sciences Hunan Agricultural UniversityChangsha 410128P.R.China Crops and Environment Science Division International Rice Research InstituteMetro Manila DAPO Box 7777Philippines

The study was conducted to investigate the effects of applying different concentrations of the macronutrients K＋,Ca2＋,and Mg2＋ on the responses of contrasting rice（Oryza sativa L.） genotypes under salt stress.A solution culture experiment was conducted in a phytotron at the International Rice Research Institute（IRRI）,under controlled temperature and humidity and natural *** subjected to salt stress of 100 mmol L-1 using NaCl,the salt tolerant genotypes FL478 and IR651,accumulated less Na＋ and maintained lower ratios of Na＋/K＋,Na＋/Ca2＋,and Na＋/Mg2＋ than the sensitive genotypes IR29 and *** tolerant genotypes also had higher concentrations of K＋ in their shoots and greater root and shoot biomass and green leaf *** genotypes also maintained much lower concentration of Na＋ and lower and more favorable ratios of Na＋/K＋,Na＋/Ca2＋,and Na＋/Mg2＋ in their active and developing *** tolerance and shoot and root growth of both tolerant and sensitive genotypes were enhanced considerably when higher concentrations of Ca2＋ and Mg2＋ were applied in culture *** concentration of Na＋ and the ratios of Na＋/K＋,Na＋/Ca2＋,and Na＋/Mg2＋ in shoots also declined *** beneficial effects of higher calcium were greater than that of magnesium and application of higher concentration of K＋ seems to have minor *** to salinity in rice can therefore be considerably enhanced through proper nutrient management,by increasing the concentrations of nutrient elements that have favorable effects such as Ca2＋ and Mg2＋.Calcium is particularly more effective than both magnesium and potassium,and can be applied at relatively larger quantities in salt affected soils.

关键词： rice(Oryza sativa L.) salt stress seedling stage nutrients contents nutrients distribution genotypes

A Study on the Correlations between the Twin kHz QPO Frequencies in Sco X-1

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Chinese Journal of Astronomy and Astrophysics 2005年第6期5卷 595-600页

作者： Hong-xing Yin Cheng-min Zhang Yong-Heng Zhao Li-ming song Fan Zhang National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 Institute of High Energy Physics Chinese Academy of Sciences Beijing 100039

For the bright neutron star low-mass X-ray binary Sco X-l, we analyzed all updated frequencies of the twin kilohertz quasi-periodic oscillations （kHz QPOs）, their correlations and distributions. We found that the frequency separation of the kHz QPO peaks appears not to be a constant, rather, it decreases with increasing inferred mass accretion rate. We show that the currently available data of Sco X-1 by Rossi X-ray Timing Explorer are inconsistent with the proposals of the beat model that the frequency separation is a constant. Our conclusions are consistent with those of some previous researchers and we discuss further implications for the kilohertz QPO models.

关键词： X-rays accretion disks - stars neutron - X-rays stars

Structural characterization of the{1122}twin boundary and the corresponding stress accommodation mechanisms in pure titanium

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Journal of Materials Science & Technology 2021年第13期72卷 114-121页

作者： Bingqiang Wei song Ni Yong Liu min song State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

{11-22}compression twin plays an important role in accommodating deformation along the c axis of HCP ***,the studies on the interface structure of{11-22}twin boundary(TB),especially the twin tip,and the corresponding local stress release mechanism are still *** work studied the interface characters of{11-22}TB of a deformed pure titanium by transmission electron ***{11-22}TB presented serrated character,consisting of coherent twin boundary(CTB)and(0002)_(T)//(11-2-2)_(M)or(11-2-2)_(T)//(0002)_(M)steps,and the twin tip was fully composed of the basal-pyramidal(BPy)and pyramidal-basal(PyB)*** twin tip presents asymmetric morphology and the step height at the twin tip is much larger than that away from the twin *** types of local stress accommodation mechanisms were observed:zonal dislocation emission and hexagonal close packed structure to facecentered cubic structure *** zonal dislocation was produced by the dissociation of the1/3dislocation that was nucleated at the twin tip and the phase transformation was introduced by emission of Shockley partial dislocations from the{11-22}twin boundary.

关键词： {1122} twin Twin boundary Twinning dislocation Stress accommodation Titanium

Wear Resistance and Bond Strength of Plasma Sprayed Fe/Mo Amorphous Coatings

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Journal of Iron and Steel Research International 2014年第10期21卷 969-974页

作者： Chao-ping JIANG Ya-zhe xing Feng-ying ZHANG Jian-min HAO Xu-ding song School of Materials Science and Engineering Chang'an University Key Laboratory of Road Construction Technology and Equipment MOE School of Construction MachineryChang'an University

Fe-based and Fe/Mo composite amorphous coatings were deposited on the surface of plain carbon steel substrates by atmospheric plasma spraying （APS）. With increasing the Mo alloy content, the microstructure of the coatings revealed more dense structure. The porosities of composite coating were all less than those of Fe-based coat- ing due to Mo alloy self-bonding performance. The ML10 friction and wear tester was employed to investigate the wear behaviors of the coatings under dry sliding conditions. It was found that the mass loss of the resultant coatings decreased with increasing Mo-based powders into the feedstock. This was attributed to the reduction of the delamina- tions resulting from improved intersplat bond with Mo addition.

关键词： atmospheric plasma spraying coating delamination wear bond strength

Risk factors for post-hepatectomy liver failure in 80 patients

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World Journal of Clinical Cases 2021年第8期9卷 1793-1802页

作者： Ying xing Zheng-Rong Liu Wei Yu Hong-Yi Zhang Mao-min song Department of General Surgery Tiantan HospitalBeijing 100170China

BACKGROUND Post-hepatectomy liver failure(PHLF)is a serious complication and a leading cause of death after hepatectomy,an accurate prediction of PHLF is important for improvement of prognosis after *** To retrospectively analyze the risk factors for postoperative liver failure in patients undergoing hepatectomy for liver *** The clinical data of 80 patients undergoing hepatectomy in our hospital from June 2018 to January 2020 were *** laboratory examination as well as preand post-operative abdominal three-dimensional reconstructive computed tomography,the demographic data,surgical data,biochemical indicators,coagulation index,routine blood tests,spleen and liver volumes,relative remnant liver volume,and other related indicators were obtained and compared between patients with PHLF and those without *** PHLF occurred in 19(23.75%)*** logistic regression analysis showed that gender,history of hepatitis/cirrhosis,and preoperative bilirubin,albumin,coagulation function,albumin-bilirubin ratio,aspartate aminotransferase-to-platelet ratio index(APRI),Model for End-Stage Liver Disease score,spleen volume(SV),spleen volume/liver volume ratio(SV/LV),and relative remnant liver volume were statistically associated with the occurrence of PHLF(all P<0.05).Multivariate regression analysis showed that preoperative total bilirubin,platelets(PLT),APRI,and SV/LV were independent risk factors for PHLF(all P<0.05).The area under the curve and cut-off values were 0.787 and 18.6 mmol/L for total bilirubin,0.893 and 146×1012/L for PLT,0.907 and 0.416 for APRI,and 0.752 and 20.84%for SV/LV,*** For patients undergoing liver resection,preoperative total bilirubin,PLT,APRI,and SV/LV are independent risk factors for *** findings may provide guidance to safely perform liver surgery in such patients.

关键词： Hepatectomy Liver failure Liver tumors Risk factors

Protective effect of resveratrol on lens epithelial cell apoptosis in diabetic cataract rat

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Asian Pacific Journal of Tropical Medicine 2015年第2期8卷 153-156页

作者： Hong-min Wang Guo-xing Li Han-song Zheng Xue-Zhi Wu Center Hospital Affiliated to Zhengzhou University Eye Hospital Affiliated to Wenzhou Medical College

Objective:To study the protective effect of resveratrol on lens epithelial cell apoptosis in diabetic cataract ***:A total of 84 Wistar rats were divided into 4 groups:12 in Group A(control group).24 in Group B(diabetic cataract group),24 in Group C(therapeutic-dose of resveratrol group) and 24 in Group D(low-dose of resveratrol group).Rats in Group B-D were given with60 mg/kg streptozotocin through intraperitoneal *** in Group C were given with 100mg/kg resveratrol and rats in Group D were given with 20 mg/kg *** caspase-3expression levels and apoptosis ratios of LEC among each group were observed:the degrees of lens opacity in Group B-D after 12 weeks were ***:There were significant differences in caspase-3 expression levels,apoptosis ratios of T.F.C among groups at 4 w,8 w and12 w(P<0.05).After 12 weeks,in Group B the degree of lens opacity was as follow:0(0.00%) in grade Ⅰ,3(37.50%) in grade Ⅱ,2(25.00%)in grade Ⅲ,2(25.00%)grade Ⅳ,and 1(12.50%) in gradeⅤ:in Group C:2(25.00%)in grade Ⅰ,4(50.00%) in grade Ⅱ.2(25.00%)in grade Ⅲ,0(0.00%)gradeⅣ,and 0(0.00%) in grade Ⅴ;in Group D:1(12.50%)in grade Ⅰ,4(50.00%) in grade Ⅱ,2(25.00%)in grade Ⅲ,1(12.50%) grade Ⅳ,and 0(0.00%) in grade Ⅴ.*** among Group B-D was statistically significant(P<0.05).Conclusions:Resveratrol has protective effect on lens epithelial cell apoptosis in diabetic cataract rat,and the effect is relative to its dose.

关键词： Resveratrol Diabetic cataract Lcns epithelial cell Cell apoptosis