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Environmental effect of vegetation restoration on degraded ecosystem in low subtropical China

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Journal of Environmental Sciences 2003年第4期15卷 514-519页

作者： PENG Shao-lin YANG Liu-chun LU hong-fang South China Institute of Botany Chinese Academy of SciencesGuangzhou 510650China.

The environmental effect of degraded ecosystem's vegetation restoration in low subtropical China was studied. Results indicated that the vegetation recovery on degraded lands significantly ameliorates surrounding environment, increases species diversity, improves soil structure, raises soil fertility, enhances productivity, and promotes regional agricultural production and social economic development dramatically. Through the combining engineering and biological measures, the restoration of degraded ecosystem in low subtropical area is possible and economical. The restoration experience in Xiaoliang, Wuhua and other sites are valuable for other degraded subtropical area was introduced.

关键词： vegetation restoration degraded ecosystem low subtropical zone environment impact

Dislocation stability in three-phase nanocomposites with imperfect interface

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Acta Mechanica Sinica 2014年第5期30卷 693-702页

作者： Ying-Xin Zhao You-Wen Liu Qi-hong fang State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body/College of Mechanical and Vehicle Engineering Hunan University

Interface imperfection can significantly affect the mechanical properties and failure mechanisms as well as the strength and toughness of nanocomposites. The elastic behavior of a screw dislocation in nanoscale coating with imperfect interface is studied in the three-phase composite cylinder model. The interface between inner nanoin- homogeneity and intermediate coating is assumed as perfectly bonded. The bonding between intermediate coating and outer matrix is considered to be imperfect with the assumption that interface imperfection is uniform, and a linear spring model is adopted to describe the weakness of imperfect interface. The explicit expression for image force acting on dislocation is obtained by means of a complex variable method. The analytic results indicate that inner interface effect and outer interface imperfection, simultaneously taken into account, would influence greatly image force, equilibrium position and stability of dislocation, and various critical parameters that would change dislocation stability. The weaker interface is a very strong trap for glide dislocation and, thus, a more effective barrier for slip transmission.

关键词： Nanocomposites -Dislocation Imperfect inter- face - Interface effect Complex variable method

Effect of Alum-Amended Litter and Stocking Density on Ammonia Release and Footpad and Hock Dermatitis of Broilers

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Agricultural Sciences in China 2011年第5期10卷 777-785页

作者： ZHANG hong-fang JIAO hong-chao SONG Zhi-gang LIN Hai Department of Animal Science Shandong Agricultural University Tai＇an 271018 P.R.China

Two experiments were conducted to evaluate the effect of alum on ammonia emission,live performance,and health of *** experiment 1,the effect of alum （0,2,and 4%） supplementation on the emission of ammonia was *** effects of alum-treated litter and stocking density （12,16,and 20 birds m-2） on the live performance and incidence of footpad and hock dermatitis were investigated in experiment *** supplementation in chicken excreta significantly decreased pH from 8.06 to 5.27 and 3.62 by 2 and 4% alum treatments,*** emission rate was reduced 73.0 and 75.8% by 2 and 4% alum treatments,*** suppressed litter urease activity was detected in 4% alum ***-amended litter （1 kg m-2） decreased atmosphere ammonia concentrations by 30% in broiler ***-amended litter maintained a lower pH until 35 d of *** weight （BW） gain was decreased by alum treatment in the period of 4-7 wk of *** stocking density （20 birds m-2） increased BW gain in the first 3 wk of age but decreased BW gain during the period of 4-7 wk of *** alum nor stocking density treatments had a significant effect on feed intake and feed ***-treated litter had no detrimental effect on the development of footpad and hock *** contrast,high stocking density （20 bird m-2） increased the incidence of footpad and hock *** result suggests that the decreased litter pH and suppressed bacterial urease activity by alum treatment is responsible for the decreased ammonia *** high stocking density,the increased litter moisture content should be responsible,at least partially,for the development of footpad and hock lesions.

关键词： ammonia stocking density litter alum broilers

PREDICTION OF LOADING DISTRIBUTION AND HYDRODYNAMIC MEASUREMENTS FOR PROPELLER BLADES IN A RIM DRIVEN THRU-STER

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Journal of Hydrodynamics 2012年第1期24卷 50-57页

作者： CAO Qing-ming hong fang-wen TANG Deng-hai HU fang-lin LU Lin-zhang China Ship Scientific Research Centre Wuxi 214082China

This article presents an approach which employs a commercial Reynolds-Averaged Navier-Stokes（RANS）solver to predict the steady wake field and loading distributions for a rim driven *** different cases of propeller blades are chosen to be calculated with the presented *** propeller blade radial circulation and chordwise circulation density distributions are *** maximum radial circulation is found at the blade tip,which is different from conventional shaft driven *** numerical results indicate that there is no tip leakage vortex in rim driven *** there exist the tip joint vortex and the root region *** characteristics are calculated by taking rim surface effect into *** the predicted results the second case in this paper is selected as the final one to perform hydrodynamic *** calculation results with empirical rim surface corrections are compared with the *** shows that the developed numerical method can well predict hydrodynamic performances of the rim driven thruster.

关键词： rim driven thruster Reynolds-Averaged Navier-Stokes(RANS)solver wake field radial circulation chordwise circulation density hydrodynamic experiment

Topological edge state analysis of hexagonal phononic crystals

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Acta Mechanica Sinica 2022年第3期38卷 78-85,I0002页

作者： Kai Zhang fang hong Je Luo Zichen Deng School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi'an 710072China MIIT Key Laboratory of Dynamics and Control of Complex Systems Northwestern Polytechnical UniversityXi'an 710072China

In this study,we propose valley phononic crystals that consist of a hexagonal aluminum plate with six chiral arrangements of *** phononic crystals were introduced into a topological insulator(TI)system to produce topologically protected edge waves(TPEW s)along the topological *** implementation of chiral topological edge states is different from the implementation of topological edge states of systems with *** the conventional breaking of mirror symmetry,a new complete band with topological edge modes gap was opened up at the Dirac point by tuning the difference in lengths of the ligaments in the chiral unit *** investigated the dispersion properties in chiral systems and applied the dispersion properties to waveguides on the interfaces to achieve designable route ***,we simulated the robust propagation of TPEWs in different routes and demonstrated their immunity to backscattering at ***,the existence of the valley Hall effect in chiral systems was *** study findings may lead to the further study of the topological states of chiral materials.

关键词： Phononic crystals Topologically protected edge waves Chiral unit cells Topological insulator

A United Framework for Large-Scale Resource Description Framework Stream Processing

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Journal of Computer Science & Technology 2019年第4期34卷 762-774页

作者： hong fang Bo Zhao Xiao-Wang Zhang Xuan-Xing Yang College of Arts and Sciences Shanghai Polytechnic UniversityShanghai 201209China College of Intelligence and Computing Tianjin UniversityTianjin 300350China Tianjin Key Laboratory of Cognitive Computing and Application Tianjin 300350China

Resource description framework(RDF)stream is useful to model spatio-temporal *** this paper,we propose a framework for large-scale RDF stream processing,LRSP,to process general continuous queries over large-scale RDF ***,we propose a formalization(named CT-SPARQL)to represent the general continuous queries in a unified,unambiguous ***,based on our formalization we propose LRSP to process continuous queries in a common white-box way by separating RDF stream processing,query parsing,and query ***,we implement and evaluate LRSP with those popular continuous query engines on some benchmark datasets and real-world *** to the architecture of LRSP,many efficient query engines(including centralized and distributed engines)for RDF can be directly employed to process continuous *** experimental results show that LRSP has a higher performance,specially,in processing large-scale real-world data.

关键词： resource description framework(RDF)stream continuous query united framework stream processing large-scale RDF stream processing(LRSP)

Uterine tumor resembling an ovarian sex cord tumor:A case report and review of literature

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World Journal of Clinical Cases 2021年第23期9卷 6907-6915页

作者： fang-fang Zhou Ying-Tao He Ying Li Min Zhang fang-hong Chen Department of Ultrasound Lishui Central HospitalThe Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina Department of Pathology Lishui Central HospitalThe Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina

BACKGROUND Endometrial stromal tumors originate from the endometrial stroma and account for<2%of all uterine *** tumor resembling an ovarian sex cord tumor(UTROSCT)is a rare histological class of endometrial stromal and related tumors according to the latest World Health Organization classification of female genital ***,we report a case of UTROSCT in a 51-year-old *** SUMMARY A 51-year-old woman had irregular menses for 6 *** patient visited a local hospital for vaginal *** computed tomography(CT)showed a mass in the pelvic *** days later,she came to our hospital for further *** results of contrast-enhanced CT and pelvic ultrasound at our hospital suggested a malignant pelvic *** then underwent total removal of the uterus with bilateral *** histological examination showed that the tumor cells had abundant cytoplasm,ovoid and spindle-shaped nuclei,fine chromatin,a high nucleoplasm ratio,and a lamellar *** findings were consistent with UTROSCT,and the results of immunohistochemical analysis supported that *** tumor was International Federation of Gynecology and Obstetrics stage *** adjuvant therapy was administered after radical *** patient was followed up for 58 mo,and no recurrence was *** We report a case of UTROSCT with abnormal menstruation as a symptom,which is one of the most common *** patients with vaginal bleeding,ultrasonography can be used as a screening test because of its convenience,speed,and lack of radiation *** patients with long-term tamoxifen use,routine monitoring of the endometrium is *** UTROSCT may have low malignant potential,surgery remains the primary management ***,fertility preservation in patients of childbearing age is a vital consideration.

关键词： Uterine tumor resembling an ovarian sex cord tumor Endometrial stromal tumor Pelvic Irregular menses Surgery Case report

Investigation on a Small Oscillogram

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Chinese Chemical Letters 2005年第9期16卷 1249-1251页

作者： hong fang ZHANG Jian Bin ZHENG hong Gang NI Hung KAO Institute of Analytical Science/Shaanxi Provincial Key Lab of Electroanalytical Chemistry Northwest University Xi＇an 710069

A small oscillogram, one end of which was substituted by a bright point caused by the redox of an appropriate depolarizer and the other end of which was the redox of Hg or the redox of supporting electrolyte cation, was investigated in this paper. Experimental results of application of the small oscillogram to oscillographic determination of cefoperazone showed that the small osciUogram was more stable, sensitive, and less interference than classical oscillogram.

关键词： Electroanalysis oscillographic analysis oscillogram

Cutaneous nodules and a novel GNAS mutation in a Chinese boy with pseudohypoparathyroidism type Ia: A case report and review of literature

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World Journal of Clinical Cases 2020年第3期8卷 587-593页

作者： Yun-Ling Li Ting Han fang hong Department of Dermatology The Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052Zhejiang ProvinceChina Department of Children’s Health Care The Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052Zhejiang ProvinceChina Department of Genetics and Metabolism The Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhou 310052Zhejiang ProvinceChina

BACKGROUND Pseudohypoparathyroidism type Ia(PHP Ia) is a rare hereditary syndrome, and patients with early PHP Ia are generally not diagnosed based on the presentation of cutaneous nodules as the main clinical feature. Here, we describe a Chinese boy with PHP Ia in whom the main clinical feature was cutaneous nodules, and the patient exhibited a novel GNAS *** SUMMARY A 5-year-old boy presented with a 5-year history of cutaneous nodules scattered over his entire body. The patient had a short stature, round face, short neck, and slightly flattened nose;he also had multiple hard papules and cutaneous nodules scattered over his entire body. The patient had a significantly elevated parathyroid hormone level. His serum calcium level was reduced, while his serum phosphorus level was increased and his serum thyroid-stimulating hormone level was elevated. Skin biopsy showed osteoma cutis in subcutaneous tissue. Sanger sequencing revealed a frameshift mutation, c.399 del T(***133 Argfs*2) in exon 5 of the GNAS gene. The patient was diagnosed with PHP Ia and subclinical hypothyroidism. He was given 1,25-dihydroxyvitamin D,calcium carbonate, and synthetic L-thyroxine. After 3 months of treatment, the patient’s parathyroid hormone level decreased, and his serum calcium and serum phosphorus levels were normal. Moreover, his thyroid-stimulating hormone level *** These findings can help dermatologists to diagnose PHP Ia in patients with cutaneous nodules as the main early clinical feature.

关键词： Pseudohypoparathyroidism type Ia Cutaneous nodules GNAS Pseudohypoparathyroidism Case report