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Toxicological Evaluation of Chicken-Breast Meat with High-Dose Irradiation

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Journal of Integrative Agriculture 2012年第12期11卷 2088-2096页

作者： ZHU Jia-ting FENG min YAN Jian-min LIU Chun-quan ha Yi-ming GAO Mei-xu yang Ping wang Zhi-dong wang De-ning LI Shu-rong GU Gui-qiang Institute of Atomic Energy in Application for Agriculture Jiangsu Academy of Agricultural Sciences Institute of Farm Product Processing Jiangsu Academy of Agricultural Sciences Institute of Agro-Products Processing Science&Technology Chinese Academy of Agricultural Sciences

In this paper, toxicity and safety of high-dose irradiated chicken-breast meat were evaluated. For assays of acute toxicity, genetic toxicity, and sub-chronic toxicity, ames test, mice bone marrow erythrocyte micronucleus, and mice sperm abnormality were performed. The results showed that, in the acute oral toxicity tests, median lethal dose （more than 10 000 mg kg-~） in male and female ICR mice showed no toxicological signs. For subacute 30-d oral toxicology of irradiated chicken-breast meat with dose of 10, 15 and 25 kGy in both male and female SD rats, no noticeable toxicological effects were observed. It is concluded that chicken-breast meat with high-dose irradiation has no acute toxicity and no genotoxicity, nor harmful effects on the animal body at the tested dosage range. Therefore, high-dose irradiated chicken-breast meat is safe for pet consumption.

关键词： toxicological assessment chicken-breast meat irradiated high dose

Colo-colonic intussusception with post-polypectomy electrocoagulation syndrome:A case report

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World Journal of Clinical Cases 2022年第25期10卷 8939-8944页

作者： Jae Young Moon min-Ro Lee Sung Kyun Yim Gi Won ha Department of Surgery Jeonbuk National University HospitalJeonju 561-180JeonbukSouth Korea Research Institute of Clinical Medicine of Jeonbuk National University-Biomedical Research Institute of Jeonbuk National University Hospital Jeonju 561-180JeonbukSouth Korea Department of Internal Medicine Biomedical Research InstituteJeonbuk National University Hospital and Medical SchoolJeonju 54907JeonbukSouth Korea

BACKGROUND Post-polypectomy electrocoagulation syndrome(PPES)can occur after colonoscopic polypectomy and is usually treated conservatively with a positive ***,there can be cases with complications *** SUMMARY A 58-year-old woman,who had no previous medical history,visited the Emergency Department of another hospital with symptoms of abdominal pain and fever,1 d after multiple colonoscopic *** abdominopelvic computed tomography(CT)scan demonstrated colo-colonic intussusception,and she was transferred to our hospital to consider an *** showed colocolonic intussusception with PPES and no evidence of *** physical examination showed localized mild tenderness on the right sided *** patient fasted and was admitted for treatment with intravenous antibiotics(piperacillin/tazobactam 4.5 g each 8 h,ornidazole 500 mg each 12 h).After admission,the symptoms got better and a follow-up CT scan demonstrated resolution of the PPES and *** patient was discharged on hospital day *** Colo-colic intussusception can occur with PPES,and it can be properly treated conservatively.

关键词： Intussusception Endoscopy Colonoscopy Colonic polyps Intestinal polyps Case report

Improving winter wheat grain yield and water-/nitrogen-use efficiency by optimizing the micro-sprinkling irrigation amount and nitrogen application rate

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Journal of Integrative Agriculture 2021年第2期20卷 606-621页

作者： LI Jin-peng ZhaNG Zhen YAO Chun-sheng LIU yang wang Zhi-min FANG Bao-ting ZhaNG Ying-hua College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193P.R.China School of Agronomy Anhui Agricultural UniversityHefei 230036P.R.China Wheat Research Institute Henan Academy of Agricultural SciencesZhengzhou 450002P.R.China

Available irrigation resources are becoming increasingly scarce in the North China Plain (NCP),and nitrogen-use efficiency of crop production is also relatively ***,it is imperative to improve the water-use efficiency (WUE) and nitrogen fertilizer productivity on the ***,we conducted a two-year field experiment to explore the effects of different irrigation amounts (S60,60 mm;S90,90 mm;S120,120 mm;S150,150 mm) and nitrogen application rates (150,195 and 240 kg ha^(–1);denoted as N1,N2 and N3,respectively) under micro-sprinkling with water and nitrogen combined on the grain yield(GY),yield components,leaf area index (LAI),flag leaf chlorophyll content,dry matter accumulation (DM),WUE,and nitrogen partial factor productivity (NPFP).The results indicated that the GY and NPFP increased significantly with increasing irrigation amount,but there was no significant difference between S120 and S150;WUE significantly increased first but then decreased with increasing irrigation and S120 achieved the highest *** increase in nitrogen was beneficial to improving the GY and WUE in S60 and S90,while the excessive nitrogen application (N3) significantly reduced the GY and WUE in S120 and S150 compared with those in the N2 *** NPFP significantly decreased with increasing nitrogen rate under the same irrigation *** synchronous increase in spike number (SN) and 1 000-grain weight (TWG)was the main reason for the large increase in GY by micro-sprinkling with increasing irrigation,and the differences in SN and TGW between S120 and S150 were *** S60 and S90,the TGW increased with increasing nitrogen application,which enhanced the GY,while N2 achieved the highest TWG in S120 and *** the filling stage,the LAI increased with increasing irrigation,and greater amounts of irrigation significantly increased the chlorophyll content in the flag leaf,which was instrumental in increasing DM after anthesis and increasing the ***-sprinkling with in

关键词： micro-sprinkling irrigation winter wheat grain yield water and nitrogen utilization

Development of seeder for mixed planting of corn and soybeans

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International Journal of Agricultural and Biological Engineering 2017年第3期10卷 95-101页

作者： Seung min Woo Daniel Dooyum Uyeh Moon Sang Sagong Yu Shin ha Department of Bio Industrial Machinery Engineering Kyungpook National UniversityDaegu 41566Korea

Corn and soybeans should be sown between 5 cm and 10 cm apart in mixed cultivation to increase protein content and improve productivity of the ***,existing sowers cannot plant at intervals of less than 20 ***,mixed cultivation of corn and soybeans is currently performed by first sowing corn seeds with a tractor and then manually planting soybean *** method results in irregular intervals between the seeds,it is laborious and time *** study aimed at developing a seeder that can simultaneously,precisely and efficiently plant corn and *** geometrical and rheological properties of corn and soybeans were initially *** seed conveying equipment were designed using the EDEM *** sowing interval between seeds,depth of soil over planted seed,and sowing performance were *** EDEM simulation results indicated that a 6-mm-wide and 3-mm-deep grooved seed-delivering roller had the highest particle mobility of the designs considered,with a 2.5%misplanting rate.A performance test showed that no misplanting occurred in the sections sowed with soybean seeds at a seeding interval that averaged 32 mm(321 seeds sown in 10 m)and that misplanting occurred in one section sowed with corn at a seeding interval that averaged 247 mm(40 seeds sown over 10 m).The sowing efficiency for both corn and soybeans was found to be 0.42 h/*** average depth of soil over seed was 32.7 mm for soybean and 39.7 mm for *** average depths are within the stipulated range for the depth of soil over seed,which is 5 to 10 times the seed *** study developed an efficient seeding machine that can simultaneously plant soybean and corn precisely,consequently improving forage yield and saving man-hours.

关键词： corn geometric characteristics mixed planting seeder soybean

Exercise improves the effects of testosterone replacement therapy and the durability of response after cessation of treatment： a pilot randomized controlled trial

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Asian Journal of Andrology 2017年第5期19卷 602-607页

作者： Dae-Yeon Cho Jeong Kyun Yeo Seung Ik Cho Jae Eun Jung Sang Jin yang Doo Hwan Kong Jeong Ku ha Jin Goo Kim min Gu Park Inje University Sanggye Paik Hospital Department of Urology Seoul Korea Inje University Seoul Paik Hospital Department of Urology Seoul Korea KonKuk University Medical Center Department of Orthopedics Seoul Korea Inje University Seoul Paik Hospital Department of Orthopedics Sports Medical Center Seoul Korea

The effects of the combination of exercise and TRT on symptoms of late-onset hypogonadism （LOH） and the durability of response after cessation of TRT were investigated. A total of fifty patients with erectile dysfunction （ED） who had a sedentary lifestyle and low serum total testosterone （T） levels were enrolled and followed for 20 weeks. Patients were randomly divided into two groups; all of them received T gel for 12 weeks and it was discontinued for 8 weeks. Patients assigned to Group II were offered a supervised exercise program for 20 weeks. Measurement of serological testing was performed and self-assessment questionnaires and Global Assessment Question （GAQ） were asked. Baseline characteristics and the initial symptom scores showed no significant difference between the two groups. Serum total T levels and the symptom scores were increased at 12 weeks in both groups, and Group II showed better results with statistical significance. There was a decrease in T levels and worsening of symptom scores at week 20 compared to week 12 in both groups, and Group II showed better results with statistical significance. On the GAQ, Group II showed higher ratio of ＂yes＂ at week 12 and the same tendency was sustained at week 20 with significant difference between two groups. The combination of exercise and TRT showed significant improvements in serum T levels and LOH symptoms compared to TRT alone. In addition, these improvements were maintained in the combination group with continuous exercise, even after cessation of TRT.

关键词： erectile dysfunction exercise hypogonadism testosterone

The effect of fertilization on early growth of konara oak and Japanese zelkova seedlings planted in a harvested pitch pine plantation

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Journal of Forestry Research 2016年第4期27卷 863-870页

作者： A-Ram yang Jaehong Hwang min Seok Cho Yowhan Son Forest Practice Research Center National Institute of Forest Science Department of Environmental Science and Ecological Engineering Graduate School Korea University

We determined a suitable amount of fertilizer for konara oak（Quercus serrata） and Japanese zelkova（Zelkova serrata） planted in a harvested pitch pine（Pinus rigida） plantation. Two-year-old bare-root seedlings of konara oak and one-year-old containerized seedlings of Japanese zelkova were planted in April 2011. Three plots were established for each tree species to evaluate each of three fertilization applications. Solid compound fertilizer（N：P：K = 3：4：1） was applied yearly in three amounts（control： no fertilization, F1： 180 kg ha-1, and F2：360 kg ha-1）, every May from 2011 to 2013. We measured the root collar diameter and height, and analyzed the compartmental N and P concentrations. Compartmental N concentrations of konara oak and Japanese zelkova were not consistent based on amount of fertilization. However,the compartmental P concentrations of konara oak and Japanese zelkova were significantly different in the order of F2, F1, and control. Although the differences in growth of konara oak appeared after 3 years of fertilization,Japanese zelkova showed differences after only 2 years of fertilization owing to differences in seedling type. Growth of konara oak was affected by fertilization at F1 and F2 in2013. However, growth of Japanese zelkova was affected only at F2. Nutrient demand of Japanese zelkova appeard to be higher than that of konara oak, at least during the early growing period. Results from this study could be practically used in harvested pitch pine plantations to determine appropriate fertilization regimes.

关键词： fertilization Japanese plantation fertilizer pitch planted seedling practically collar yearly

Nitrous oxide emissions following seasonal freeze-thaw events from arable soils in Northeast China

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Journal of Integrative Agriculture 2018年第1期17卷 231-246页

作者： CHEN Zhe yang Shi-qi ZhaNG Ai-ping JING Xin SONG Wei-min MI Zhao-rong ZhaNG Qing-wen wang Wen-ying yang Zheng-li Key Laboratory for Agro-environment Ministry of Agriculture/Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences Beijing 100081 P.R. China School of Life Sciences Qinghai Normal University Xining 810008 P.R. China Key Laboratory for Earth Surface Processes Ministry of Education/Department of Ecology College of Urban and Environmental Sciences Peking University Beijing 100871 P.R.China Center for Earth System Science Tsinghua University Beiiina 100084. P.R.China Farmland Irrigation Research Institute Chinese Academy of Agricultural Sciences Xinxiang 453002 P.R. China

Seasonal soil freeze-thaw events may enhance soil nitrogen transformation and thus stimulate nitrous oxide （N2O） emissions in cold regions. However, the mechanisms of soil N2O emission during the freeze-thaw cycling in the field remain unclear. We evaluated N2O emissions and soil biotic and abiotic factors in maize and paddy fields over 20 months in Northeast China, and the structural equation model （SEM） was used to determine which factors affected N2O production during non-growing season. Our results verified that the seasonal freeze-thaw cycles mitigated the available soil nitrogen and carbon limitation during spring thawing period, but simultaneously increased the gaseous N2O-N losses at the annual time scale under field condition. The N2O-N cumulative losses during the non-growing season amounted to 0.71 and 0.55 kg N ha 1 for the paddy and maize fields, respectively, and contributed to 66 and 18% of the annual total. The highest emission rates （199.2- 257.4 μg m-2 h-1） were observed during soil thawing for both fields, but we did not observe an emission peak during soil freezing in early winter. Although the pulses of N2O emission in spring were short-lived （18 d）, it resulted in approximately 80% of the non-growing season N2O-N loss. The N2O burst during the spring thawing was triggered by the combined impact of high soil moisture, flush available nitrogen and carbon, and rapid recovery of microbial biomass. SEM analysis indicated that the soil moisture, available substrates including NH4＋ and dissolved organic carbon （DOC）, and microbial biomass nitrogen （MBN） explained 32, 36, 16 and 51% of the N2O flux variation, respectively, during the non-growing season. Our results suggested that N2O emission during the spring thawing make a vital contribution of the annual nitrogen budget, and the vast seasonally frozen and snow-covered croplands will have high potential to exert a positive feedback on climate change considering the sensitive response of nitrogen biog

关键词： N2O non-growing season nitrogen biogeochemical cycling soil moisture snow cover structural equation model

Ascaris-mimicking common bile duct stone: A case report

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World Journal of Clinical Cases 2020年第19期8卷 4499-4504页

作者： Seo-Youn Choi ha Eun Jo Yun Nah Lee Ji Eun Lee min Hee Lee San ghyeok Lim Boem ha Yi Radiology Soonchunhyang University HospitalBucheonBucheon 14584South Korea Digestive disease center and research institute Soonchunhyang University HospitalBucheonBucheon 14584South Korea

BACKGROUND In most cases,it is not difficult to differentiate common bile duct(CBD)stone from Ascaris infection because they are different disease entities and have different imaging *** two diseases usually demonstrate unique characteristic findings on computed tomography or magnetic resonance ***,we report a rare case from our experience in which a CBD stone mimicked and was misdiagnosed as *** SUMMARY A 72-year-old male presented with elevated serum liver *** tomography showed a hyper-attenuated,elongated lesion in the CBD lumen and associated biliary *** resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography revealed a linear filling defect in the bile ***,elongated echogenic material with a central hypoechogenic area was seen on endoscopic *** the imaging findings caused us to suspect infection with the nematode Ascaris,the lesion was revealed to be a dark-brown-colored CBD stone through endoscopic *** We report a rare case of a CBD stone that mimicked *** also review the literature for side-by-side comparisons of the imaging features of CBD stones and ascariasis.

关键词： Case report Common bile duct Gallstones Ascaris Ascariasis Multidetector computed tomography Magnetic resonance cholangiopancreatography

云南大理西湖流域工业革命以来的植被、气候与火灾

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第四纪研究 2024年第1期44卷 174-190页

作者：廖露莹孙启发于苗苗蒙红卫王敏陈光杰沈才明云南省高原地理过程与环境变化重点实验室云南师范大学地理学部云南昆明650500 江西省赣州市气象台江西赣州341000 楚雄师范学院资源环境与化学学院云南楚雄675000

本研究以云南大理西湖46 cm长的湖泊沉积物岩芯为研究对象,基于^(210)Pb-^(137)Cs测年和模式定年法建立了岩芯的年代框架,以0.5~1.0 cm间隔获取了51个样品进行孢粉、炭屑分析,重建了大理西湖流域工业革命以来(1878~2013年)的植被演替、... 详细信息

本研究以云南大理西湖46 cm长的湖泊沉积物岩芯为研究对象,基于^(210)Pb-^(137)Cs测年和模式定年法建立了岩芯的年代框架,以0.5~1.0 cm间隔获取了51个样品进行孢粉、炭屑分析,重建了大理西湖流域工业革命以来(1878~2013年)的植被演替、气候变化及火灾史,探讨了火灾发生的驱动因素。结果表明,工业革命以来研究区的植被演替、气候变化及火灾史可以分为6个阶段:1)1878~1897年,流域植被以禾本科为主的草本类型占优,周边林地海拔由低到高主要分布云南松林、常绿阔叶林,气候凉湿,火灾发生频率较高;2)1897~1932年,云南松林退缩,气候冷湿,火灾发生频率偏低;3)1932~1948年,云南松林与常绿阔叶林向低海拔地区退缩,气候冷干,火灾发生频率稍高;4)1948~1958年,云南松林面积扩张,常绿阔叶林下降,湿地面积增加,气候温湿,火灾发生频率高,人类活动显著加剧;5)1958~1995年,云南松林与旱冬瓜林扩张,常绿阔叶林进一步退缩,气候暖湿,火灾发生频率低;6)1995~2013年,云南松林与旱冬瓜林继续扩张,气候暖干,火灾发生频率低。大理西湖的火灾在20世纪50年代之前是由自然因素(气候)控制,可燃物的多少是控制火灾发生频率的关键因素;之后人类活动成为主控因子,人类对植被的破坏和用火是触发火灾的主要原因。

关键词：大理西湖花粉炭屑植被气候火灾