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Anatomical Adaptations of the Xerophilous Medicinal Plant, Capparis spinosa, to Drought Conditions
Lu Gan,Chunyu Zhang,Yongtai Yin,Zhiwei Lin,Yongwei Huang,Jun Xiang,Chunhua Fu,Maoteng Li 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.2
Capparis spinosa is a plant that grows in dry and arid environments. As far as can be ascertained, no comprehensive studies on how the leaf, stem and root structures adapt to drought conditions have been published to date. In this paper, a study into the anatomical adaptations of the leaf, stem and root of C. spinosa to drought environments was conducted using in vitro cultured seedlings as control. The results showed that C. spinosa could change its leaf, stem, and root structures when adapting to drought conditions. The plant growing under drought conditions possessed an enlarged transit region between the stem and root where the xylem and fibro-vascular system had increased in order to enhance water absorption and storage capacity. The leaf, stem and root of C. spinosa under drought conditions were better developed than those under normal in vitro culture conditions. The leaf possessed uniform mesophyll cells and three or four layers of palisade mesophyll cells on both sides of the mature leaves. The stomata were evenly distributed across both sides of the leaf, and they remained open continually during the day throughout the summer growing period, especially those on the lower leaf surface. The xylem in the stem was extremely well developed with wide vessels and much thicker cortical layers. All these characteristics can enhance the adaptability of C. spinosa and enable it to survive in extremely dry and arid areas.
Influence of the insemination method on the outcomes of elective blastocyst culture
Wang, Caizhu,Feng, Guixue,Zhang, Bo,Shu, Jinhui,Zhou, Hong,Gan, Xianyou,Lin, Ruoyun The Korean Society for Reproductive Medicine 2017 Clinical and Experimental Reproductive Medicine Vol.44 No.2
Objective: The aim of this study was to explore the effects of the insemination method on the outcomes of elective blastocyst culture. Methods: We retrospectively analyzed the outcomes of elective blastocyst culture performed between January 2011 and December 2014. Results: There were 2,003 cycles of conventional in vitro fertilization (IVF) and 336 cycles of intracytoplasmic sperm injection (ICSI), including 25,652 and 4,164 embryos that underwent sequential blastocyst culture, respectively. No significant differences were found in the female patients' age, basal follicle-stimulating hormone level, basal luteinizing hormone level, body mass index, number of oocytes, maturity rate, fertilization rate, or good-quality embryo rate. However, the blastocyst formation rate and embryo utilization rate were significantly higher in the conventional IVF group than in the ICSI group (54.70% vs. 50.94% and 51.09% vs. 47.65%, respectively, p<0.05). The implantation/pregnancy rate (IVF, 50.93%; ICSI, 55.10%), miscarriage rate (IVF, 12.57%; ICSI, 16.29%), and live birth rate (IVF, 42.12%; ICSI, 44.08%) were similar (p>0.05). No cycles were canceled due to the formation of no usable blastocysts. Conclusion: Although the fertilization method had no effect on clinical outcomes, the blastocyst formation rate and embryo utilization rate in the ICSI group were significantly lower than those observed in the conventional IVF group. Therefore, more care should be taken when choosing to perform blastocyst culture in ICSI patients.
Yizao Wan,Zhonghong Lin,Deqiang Gan,Teng Cui,Meirong Wan,Fanglian Yao,Quanchao Zhang,Honglin Luo 한국섬유공학회 2019 Fibers and polymers Vol.20 No.8
Graphene-based nanomaterials have been used as biomaterials to enhance cell adhesion, growth, anddifferentiation. However, the effect of graphene materials on cancer cell behavior has not been thoroughly investigated. Herein, we have incorporated graphene oxide (GO) into cellulose acetate (CA) to develop nanofibrous scaffolds for in vitrocancer cell culture, which is a crucial step for drug screening and cancer research. The GO/CA scaffolds were seeded withbreast cancer cells and cell viability, proliferation, adhesion, infiltration, and morphology were assessed. Mechanicalcharacterization demonstrated that the mechanical properties of GO/CA scaffolds were significantly better than bare CAscaffold and improved with increasing GO content. More importantly, the in vitro cell studies showed that the cancer cells onGO/CA scaffolds had significantly higher viability and better cell adhesion and growth than bare CA. Our results confirm animportant role of GO in improving mechanical properties and cancer cell performance on GO/CA scaffolds. These resultssuggest the potential of the GO/CA scaffolds as a promising candidate for in vitro cancer models.
Semantic Annotation of Ontology by Using Rough Concept Lattice Isomorphic Model
Hongsheng Xu,Ruiling Zhang,Chunjie Lin,Wenli Gan 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.2
Semantic annotation is the process based on ontology annotation concept class, attribute and other metadata for cyber source and its various parts. Ontology mapping is to calculate the similarity between two ontology elements. Ontology merging is two or more source ontology merging into a goal Ontology. The basic principle of the concept lattice isomorphic generating is isomorphic to the background of the isomorphic concept lattice, and as concept lattice isomorphic background can generate the concept lattice. This paper analyzes the methods of ontology mapping and merging based on rough concept lattice isomorphic model and presents semantic annotation of ontology by using rough concept lattice isomorphic model. Experiments show that this method is better than the traditional method in semantic annotation accuracy and breadth.
Strength criterion of plain recycled aggregate concrete under biaxial compression
Zhen-Jun He,Gan-Wen Liu,Wan-Lin Cao,Chang-Yang Zhou,Zhang Jia-Xing 사단법인 한국계산역학회 2015 Computers and Concrete, An International Journal Vol.16 No.2
This paper presents results of biaxial compressive tests and strength criterion on two replacement percentages of recycled coarse aggregate (RPRCA) by mass for plain structural recycled aggregate concrete (RAC) at all kinds of stress ratios. The failure mode characteristic of specimens and the direction of the cracks were observed and described. The two principally static strengths in the corresponding stress state were measured. The influence of the stress ratios on the biaxial strengths of RAC was also analyzed. The experimental results showed that the ratios of the biaxial compressive strength 3f to the corresponding uniaxial compressive strength c for the two RAC are higher than that of the conventional concrete (CC), and dependent on the replacement percentages of recycled coarse aggregate, stress states and stress ratios; however, the differences of tensile-compressive ratios for the two RAC and CC are smaller. On this basis, a new failure criterion with the stress ratios is proposed for plain RAC under biaxial compressive stress states. It provides the experimental and theoretical foundations for strength analysis of RAC structures subject to complex loads.