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Ecological stoichiometry and biomass response of Agropyron michnoi *** simulated N deposition in a sandy grassland,China

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Journal of Arid Land 2020年第5期12卷 741-751页

作者： JIN Xiaoming YANG Xiaogang ZHOU Zhen zhang yingqi YU Liangbin zhang Jinghua LIANG Runfang Department of Life Science Hulunbuir UniversityHulunbuir 021008China College of Environmental Science Northeast Normal UniversityChangchun 130024China Grassland Research Institute Chinese Academy of Agricultural SciencesHohhot 010010China

Sandy grassland in northern China is a fragile ecosystem with poor soil *** how plant species regulate growth and nutrient absorption under the background of nitrogen(N)deposition is crucial for the management of the sandy grassland *** carried out a field experiment with six N levels in the Hulunbuir Sandy Land of China from 2014 to 2016 and explored the Agropyron michnoi *** of both aboveground and belowground biomasses and carbon(C),N and phosphorus(P)concentrations in the plant tissues and *** increasing N addition,both aboveground and belowground biomasses and C,N and P concentrations in the plant tissues increased and exhibited a single-peak curve.C:N and C:P ratios of the plant tissues first decreased but then increased,while the trend for N:P ratio was *** peak values of aboveground biomass,belowground biomass and C concentration in the plant tissues occurred at the level of 20 g N/(m2•a),while those of N and P concentrations in the plant tissues occurred at the level of 15 g N/(m2•a).The maximum growth percentages of aboveground and belowground biomasses were 324.2%and 75.9%,respectively,and the root to shoot ratio(RSR)decreased with the addition of N.N and P concentrations in the plant tissues were ranked in the order of leaves>roots>stems,while C concentration was ranked as roots>leaves>*** increase in N concentration in the plant tissues was the largest(from 34%to 162%),followed by the increase in P(from 10%to 33%)and C(from 8%to 24%)*** aboveground biomass was positively and linearly correlated with leaf C,N and P,and soil C and N concentrations,while the belowground biomass was positively and linearly correlated with leaf N and soil C *** results showed that the accumulation of N and P in the leaves caused the increase in the aboveground biomass,while the accumulation of leaf N resulted in the increase in the belowground biomass.N deposition can alter the allocat

关键词： biomass nitrogen deposition plant tissue C,N and P stoichiometry sandy grassland

Effects of florfenicol exposure on growth,development and antioxidant capacity of flounder Paralichthys olivaceus larvae at different developmental stages

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Journal of Oceanology and Limnology 2020年第2期38卷 550-559页

作者： GUO Rui zhang yingqi zhang Xianyu zhang Qian CHENG Rui MD MOSTAFIZUR Rahman LIU Ying College of Marine Science and Environment Dalian Ocean UniversityDalian 116023China Liaoning Aquacultural Engineering R&D Center Dalian 116023China

Antibiotics are widespread in various environmental media,and may pose a potential threat to aquatic ecosystems and non-target aquatic ***(FLO)is one of the most commonly used antibiotics in aquaculture,and extensively used to substitute chloramphenicol with its strong sterilization and low adverse ef *** this study,flounder Paralichthys olivaceus,an important economic fish species in seawater was used as an experimental *** exposure concentrations of FLO(including environmentrelated concentrations)were set at 0,0.01,0.1,1,and 10 mg/*** fects of FLO exposure for 168 h on growth and development,motor behavior,antioxidant enzyme activity,malondialdehyde(MDA)content,and thyroid hormone level of *** larvae were studied in pre-larvae(1 dpf)and post-larvae(20 dpf).The results show that the short-term FLO exposure could promote the larvae growth to some degrees,but inhibit them as the exposure time *** pre-larvae,FLO at 0.01 mg/L could stimulate the motor nerve system and increase the swimming ability,but inhibited it at 1 mg/*** the increasing dosage of FLO,the superoxide dismutase(SOD)and MDA contents were elevated,reaching the maximum in the 1 mg/L FLO *** pre-larvae were more sensitive than the post-larvae to FLO in the environment,and the growth and immune resistance could be damaged with long ***-larvae were more tolerant to external pollutants,FLO at 1 mg/L could promote the motor behavior and reduce SOD and MDA ***,FLO can be used as an antibiotic at a proper concentration but as a drug to prevent disease in a long-term way.

关键词： florfenicol Paralichthys olivaceus larvae growth and development motor behavior antioxidant capacity

Protective mechanisms of Tuina therapy against lipopolysaccharide-induced fever in young rabbits based on untargeted metabolomics analysis

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Journal of Traditional Chinese Medicine 2023年第4期43卷 725-733页

作者： LIU Di zhang yingqi YU Tianyuan LIU Zhifeng JIAO Yi WANG Hourong XU Yajing GUAN Qian CHEN Lulu HU Hui School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese MedicineBeijing 102401China Department of Acupuncture-Moxibustion Beijing Massage HospitalBeijing 100035China Department of Acupuncture-Moxibustion Dongfang HospitalBeijing University of Chinese MedicineBeijing 100078China

OBJECTIVE:To investigate the effect of Tuina on the plasma metabolites of lipopolysaccharide-induced febrile in infant ***:Twenty-four infant New Zealand rabbits were selected and randomly divided into three groups:saline,model,and *** fever model was established by injecting LPS intravenously through the ear margin vein in the model group and Tuina group,*** modeling was considered successful when the anal temperature increased by 0.5℃or above within 1 *** the Tuina group,six Tuina techniques(i.e.,opening Tianmen/the heaven gate,pushing Kangong/the superciliary arch,kneading Taiyang and the prominent bone behind the ears,clearing Tianheshui,spine pinching)that alleviate fever were performed on the young rabbits 1 h after the modeling,whereas the model and saline groups were not given Tuina treatment,with the real-time anal temperature monitored during the *** plasma was taken 3 h after the modeling for liquid chromatography-mass spectrometry(LC-MS)untargeted metabolomics ***:Our results showed a fever-reducing effects of Tuina therapy on lipopolysaccharide-induced fever in young rabbits,as indicated by a significantly lower anal temperature,maximum rise in body temperature,and body response index at 2 and 3 h after modeling in the Tuina group compared to the model group,with reductions in the PGE2 expression observed in the blood and *** differential metabolites including riboflavin,nicotinamide N-oxide,porphobilinogen,5-hydroxyindoleacetic acid,gamma-aminobutyric acid,and lysoPC(16:1(9Z)/0:0)were found following the Tuina *** primarily involves glycine-serinethreonine,arginine-proline,porphyrin-chlorophyll,pyrimidine,primary bile acid biosynthesis,and cyanoamino acid metabolic ***:Tuina therapy has proven to be effective in reducing body temperature and down-regulating PGE2 expression in LPS-induced febrile young rabbits,with its mechanism of fever-reducing action poss

关键词： fever pediatrics metabolomics Lipopolysaccharides riboflavin glycine Tuina therapy

A newly discovered Gigantopithecus fauna from Sanhe Cave, Chongzuo, Guangxi, South China

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Chinese Science Bulletin 2009年第5期54卷 788-797页

作者： JIN ChangZhu QIN DaGong PAN WenShi TANG ZhiLu LIU JinYi WANG Yuan DENG ChengLong zhang yingqi DONG Wei TONG HaoWen Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China School of Life Sciences Peking University Beijing 100871 China Paleomagnetism and Geochronology Laboratory Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029. China

Among the most important faunas in the Late Cenozoic, the Gigantopithecus faunas have received a good deal of attention. The Gigantopithecus fauna recently discovered in Sanhe Cave consists of more than 80 mammal species, including cf. Hominidae, Pongo sp., Hylobates sp., Sinomastodon yangzien-sis, Stegodon preorientalis, Cervavitus fenqii, Dicoryphochoerus ultimus and Sus xiaozhu. It is the southernmost Gigantopithecus fauna found so far in China. Its geological age is estimated to be Early Pleistocene based on the fauna and stratigraphic correlation. The significant increase in the estimated body sizes of Ailuropoda, Gigantopithecus and Tapirus shows that the Sanhe fauna is middle Early Pleistocene, later than those from Wushan and Liucheng (early Early Pleistocene). Paleomagnetic dating of the fossil-bearing strata in Sanhe Cave gives an age of approximately 1.2 Ma. The fauna is characterized by tropical-subtropical forest types, including Pongo sp., Tupaia sp., Ia sp., Typhlomys intermedius, etc., and it lacks Palaearctic types. It is a typical tropical forest fauna, suggesting an en-vironment with a lush forest and a warm and humid climate. The discovery of the Sanhe Gigantopith-ecus fauna is significant for establishing the chronological stages of the Gigantopithecus faunas in China, and for discussing their origin, evolution and dynamics.

关键词：崇左市洞穴巨猿动物群化石

An investigation of the influence of intestinal flora in external traditional Chinese medicine therapy

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Journal of Traditional Chinese Medical Sciences 2023年第1期10卷 10-18页

作者： Hourong Wang Zhifeng Liu Tianyuan Yu yingqi zhang Yi Jiao Di Liu Yajing Xu Qian Guan Mengqian Lu School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese MedicineBeijing 102488China Dongzhimen Hospital Beijing University of Chinese MedicineBeijing 100700China Dongfang Hospital Beijing University of Chinese MedicineBeijing 100078China

External therapy,which has been used for millennia to treat disease,has now become the newest member of complementary and alternative therapies.A growing number of clinical studies and animal experiments have shown that external therapy exerts a positive effect on the intestinal *** this paper,we review the research related to external therapy on various systemic diseases and focus on changes in the intestinal *** found that studies on external therapy are dominated by acupuncture and tuina,primarily aimed at the treatment of digestive and neurological ***,the deeper mechanism of regulation of the intestinal flora by external therapy has not yet been experimentally confirmed.

关键词： Traditional Chinese medicine External therapy Intestinal flora Digestive diseases Neurological diseases Acupoint Mechanism

Effect of pediatric tuina on hypothalamic metabolites in young rabbits using liquid chromatography-mass spectrometry

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Journal of Traditional Chinese Medical Sciences 2022年第2期9卷 188-196页

作者： Zhifeng Liu Yi Jiao Tianyuan Yu yingqi zhang Di Liu Hourong Wang Yajing Xu Qian Guan Taotao Lv Jian Shu School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese MedicineBeijing102488China Department of Acupuncture Dongfang Hospital Beijing University of Chinese MedicineBeijing100078China Shu Acupuncture Clinic FayettevilleNY13066USA

Objective: To investigate the changes in the hypothalamic metabolites of lipopolysaccharide(LPS) febrile young rabbits after the treatment with pediatric ***: A total of 30 young rabbits were randomly assigned into three groups: the normal group, the model group, and the tuina group. Both the model group and the tuina group were injected intravenously with LPS. “Six antipyretic manipulations”(pushing Tianmen, pushing Kangong, kneading Taiyang,kneading Erhougaogu, clearing Tianheshui, and pushing Jizhu) were administered 1 h after the LPS injection in the tuina group. The rectal temperatures of the young rabbits were monitored during the experiment to explore the antipyretic effect. Three hours after the injection, the content of interleukin-1β(IL-1β), tumor necrosis factor(TNF)-a, and prostaglandin E;(PGE;) in the serum was detected. In addition, liquid chromatography-mass spectrometry(LC-MS) was used for the hypothalamus ***: Compared with the model group, the rectal temperature of the tuina group was decreased at 2 h and 3 h after the LPS injection(P =.04, P =.03, respectively), and the content of IL-1β, TNF-a, and PGE2was decreased(P =.03, P =.003, and P =.008, respectively). The metabolomics results showed that there were 23 potential biomarkers after the tuina intervention, enriching 27 pathways. Lipid metabolites,especially glycerophospholipids, were a majority of the altered metabolites. The primary metabolic pathways affected by tuina included the arachidonic acid metabolism, the GABAergic synapse, D-glutamine and D-glutamate metabolism, and the glutamatergic ***: Pediatric tuina reduced the temperature of the febrile rabbits and downregulated the expression of IL-1β, TNF-a, and PGE2, and the antipyretic mechanism may be related to changes in metabolites and metabolic pathways in the hypothalamus.

关键词： Fever Pediatric tuina Metabolomics Liquid chromatography coupled with mass spectrometry Hypothalamus Interleukin-1b Tumor necrosis factor-a Prostaglandin E_(2)

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步氏巨猿研究九十年的回顾与展望

人类学学报 2024年第6期43卷 1006-1026页

作者：张颖奇中国科学院古脊椎动物与古人类研究所北京100044

步氏巨猿从发现至今已有90年的历史,但是其化石材料仍然局限于产自19处洞穴堆积化石地点的4件不完整下颌骨和近2000颗游离牙齿。在现有的化石材料和地点基础上,同仁们已经对步氏巨猿的系统发育关系、演化趋势、体质量和体型大小、生态... 详细信息

步氏巨猿从发现至今已有90年的历史,但是其化石材料仍然局限于产自19处洞穴堆积化石地点的4件不完整下颌骨和近2000颗游离牙齿。在现有的化石材料和地点基础上,同仁们已经对步氏巨猿的系统发育关系、演化趋势、体质量和体型大小、生态、食性、绝灭原因等方方面面进行了探讨,最大程度地揭开了这一大型人科成员的神秘面纱。虽然现有共识将步氏巨猿视为猩猩亚科中Sivapithecus-Indopithecus支系上一个特化的末梢成员,但该认识尚需突破性化石材料尤其是颅骨形态的检验。根据推测体质量和体型大小,步氏巨猿应该为地栖四足行走者,这一点也有待颅后骨骼尤其是四肢骨骼化石材料的检验。本文除系统梳理其研究历史之外,也对诸如“神秘古猿”究竟是人是猿、中国南方喀斯特地区的上新世化石记录空白等与步氏巨猿后续研究和我国早期人类演化息息相关的科学问题进行了展望,期待将来在中国南方地区能有突破性的新发现,重新给人属早期演化相关理论注入中国乃至亚洲元素。

关键词：步氏巨猿人科神秘古猿范式转换上新世间断

维普期刊数据库博看期刊

Amorphous magnetic semiconductors with Curie temperatures above room temperature

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Journal of Semiconductors 2019年第8期40卷 100-107页

作者： Na Chen Kaixuan Fang Hongxia zhang yingqi zhang Wenjian Liu Kefu Yao Zhengjun zhang Key Laboratory for Advanced Materials Processing Technology (MOE) School of Materials Science and Engineering Tsinghua University Beijing 100084 China Key Laboratory for Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Beijing 100084 China

Recently, amorphous magnetic semiconductors as a new family of magnetic semiconductors have been developed by oxidizing ferromagnetic amorphous metals/alloys. Intriguingly, tuning the relative atomic ratios of Co and Fe in a Co-Fe-Ta-B-O system leads to the formation of an intrinsic magnetic semiconductor. Starting from high Curie-temperature amorphous ferromagnets, these amorphous magnetic semiconductors show Curie temperatures well above room temperature. Among them, one typical example is a p-type Co28.6Fe12.4Ta4.3B8.7O46 magnetic semiconductor, which has an optical bandgap of ~2.4 eV, roomtemperature saturation magnetization of ~433 emu/cm3, and the Curie temperature above 600 K. The amorphous Co28.6Fe12.4Ta4.3B8.7O46 magnetic semiconductor can be integrated with n-type Si to form p-n heterojunctions with a threshold voltage of ~1.6 V, validating its p-type semiconducting character. Furthermore, the demonstration of electric field control of its room-temperature ferromagnetism reflects the interplay between the electricity and ferromagnetism in this material. It is suggested that the carrier density, ferromagnetism and conduction type of an intrinsic magnetic semiconductor are controllable by means of an electric field effect. These findings may pave a new way to realize magnetic semiconductor-based spintronic devices that work at room temperature.

关键词： CoFeTaBO amorphous magnetic semiconductors electric field control of ferromagnetism metal-semiconductor transition

Dl-3-butylphthalide-enhanced hematopoietic stem cell transplantation and endogenous stem cell mobilization for the treatment of cerebral infarcts

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Neural Regeneration Research 2011年第7期6卷 494-499页

作者： Baoquan Lu Xiaoming Shang Yongqiu Li Hongying Ma Chunqin Liu Jianmin Li yingqi zhang Shaoxin Yao Department of Neurology Tangshan Workers' Hospital Hebei Medical University Tangshan 063000 Hebei Province China Department of Cardiology Tangshan Workers' Hospital Hebei Medical University Tangshan 063000 Hebei Province China Department of Neurosurgery Affiliated Hospital of Hebei United University Tangshan 063000 Hebei Province China Department of Infectious Diseases Tangshan Workers' Hospital Hebei Medical University Tangshan 063000 Hebei Province China Department of Radiology Tangshan Workers' Hospital Hebei Medical University Tangshan 063000 Hebei Province China

Exogenous stem cell transplantation and endogenous stem cell mobilization are both effective for the treatment of acute cerebral infarction. The compound dl-3-butylphthalide is known to improve microcirculation and help brain cells at the infarct loci. This experiment aimed to investigate the effects of dl-3-butylphthalide intervention based on the transplantation of hematopoietic stem cells and mobilization of endogenous stem cells in a rat model of cerebral infarction, following middle cerebral artery occlusion. Results showed that neurological function was greatly improved and infarct volume was reduced in rats with cerebral infarction. Data also showed that dl-3-butylphthalide can promote hematopoietic stem cells to transform into vascular endothelial cells and neuronal-like cells, and also enhance the therapeutic effect on cerebral infarction by hematopoietic stem cell transplantation and endogenous stem cell mobilization.

关键词： dl-3-butylphthalide hematopoietic stem cells endogenous stem cells infarction stem cell mobilization neural regeneration