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世界核心医学期刊文摘(眼科学分册) 2006年第1期 21-22页

作者： Sangwan V.S. Matalia H.P. vemuganti g.k. 王大江 L V Prasad Eye Institute L V Prasad Marg Banjara Hills Hyderabad 500 034 India

Objective: To describe the early results of penetrating.k.ratoplasty (PkP) in patients who had previously undergone cultivated limbal epithelium transplantation. Methods: Medical records of patients with limbal stem cell deficiency due to chemical burns who underwent PkP after cultivated limbal epithelium transplantation were reviewed for demographics, primary etiology, type of limbal transplantation, ocular surface stability, visual acuity, graft clarity, and complications. Histopathologic features of the recipient corneal buttons were studied with special attention to epithelial status. Results: Of the 125 patients with limbal stem cell deficiency treated with cultivated limbal epithelium transplantation, 15 underwent PkP at a mean interval of 7 months (range, 2-12 months) following cultivated limbal epithelium transplantation (autologous, n=11; allogenic, n=4). All 4 patients treated with allogenic cultivated limbal epithelium transplantation were undergoing immunosuppressive therapy. Fourteen (93% ) of the 15 eyes had a successful corneal graft with a stable corneal epithelium. Preoperative best-corrected visual acuity was less than 20/200 in 14 of the 15 eyes. At a mean± SD follow-up of 8.3± 5.0 months after PkP, the best-corrected visual acuity was more than 20/60 in 8 eyes, 20/200 to 20/60 in 5 eyes, and less than 20/200 in 2 eyes. Three of the 15 eyes experienced corneal allograft rejection, which was managed successfully. One eye with graft rejection also had glaucoma. None of the limbal epithelial allografts showed signs of rejection. Conclusions: Early results of PkP following cultivated limbal epithelium transplantation are favorable when performed after stabilizing the ocular surface. Adequate immunosuppression is essential for allogenic cultivated limbal epithelium transplantation to avoid rejection. Corneal allografts can separately reject the limbal allografts.

关键词：角膜缘上皮细胞穿透性角膜移植术角膜植片

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掌跖角化-牙周破坏综合征的眼表鳞状瘤表现

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世界核心医学期刊文摘（眼科学分册） 2005年第6期1卷 16-16页

作者： Murthy R. Honavar S.g. vemuganti g.k. 司冰心

To report the occurrence of ocular surface squamous neoplasia (OSSN) in a patient with Papillon-Lefevre syndrome. Interventional case report. A 14- year- old boy presented with a progressively growing limbal lesion in the right eye for 2 months. He had associated erythematous scaly lesions on the elbows, knees, and feet with periodontosis suggestive of Papillon-Lefevre syndrome. An excision biopsy of the limbal tumor and a skin biopsy was performed. The limbal tumor showed features of carcinoma in situ with clear margins. The skin biopsy showed epidermal hyperplasia and hyperkeratosis with perivascular infiltrates, consistent with Papillon-Lefevre syndrome. Ocular surface squamous neoplasia may occur in patients with Papillon-Lefevre syndrome, an association that to the best of our knowledge has not been previously reported.

关键词：掌跖角化角膜缘肿瘤血管浸润皮肤活检组织活检切除活检干预性足部皮肤过度角化原位癌

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眼眶多囊棘球蚴病

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世界核心医学期刊文摘(眼科学分册) 2006年第1期 18-18页

作者： Murthy R. Honavar S.g. vemuganti g.k. 潘佳鸿 Division of Ophthalmic Plastic Surgery Orbit and Ocular Oncology LV Prasad Eye Institute LV Prasad Marg Banjara Hills Hyderabad 500 034 India Dr

PURPOSE: To report a case of polycystic echinococcosis of the orbit caused by Echinococcus oligarthrus. DESIgN: Interventional case report. METHODS: A 14-year-old girl presented with a massive proptosis of the right eye of 9 years duration and loss of vision. The eye was phthisic, and a cystic mass was palpable. Computed tomography scan showed closely packed multiple orbital cysts with destruction of themedial orbitalwall. Surgical exploration was performed. RESULTS: The phthisic eye was enucleated. Dissection of the outer fibrous capsule yielded approximately 30 intact translucent white cysts of various sizes that were suggestive of polycystic echinococcosis. The diagnosis of echinococcosis was confirmed on histopathologic evaluation. The specific diagnosis of E oligarthrus was made on the basis of the presence of straight-backed hooks and central guards. CONCLUSION: Polycystic echinococcosis of the orbit caused by E oligarthrus is rare. It may be an entirely new entity or hitherto unrecognized form of orbital echinococcosis.

关键词：棘球蚴病绦虫感染多囊眼眶

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A MICROMECHANICAL MODEL FOR γ-TiAl BASE PST CRYSTALS

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Acta Metallurgica Sinica(English Letters) 2005年第6期18卷 686-694页

作者： J.L. Su g.k. Hu School of Mechanics-Electrics Engineering Fujian Agriculture and Forestry University Fuzhou 350002 China Department of Applied Mechanics Beijing Institute of Technology Beijing 100081 China

An analytical micromechanical method is proposed to examine the dependence of plastic deformation on the microstructure for a PST crystal. The sub-domain microstructure of the γ phase and the effect of the α2 phase are taken into account by a proper micromechanical formulation, the dislocation slip and twinning deformation mechanisms are considered in the context of crystal plasticity. The model can well predict the dependence of stress-strain relations on loading angle with respect to the microstructure. The influence of the twinning and lamellar spacing on the deformation behavior and biaxial yield surfaces for PST crystals are also examined.

关键词： TiAI alloy crystal plasticity micromechanical model yield surface

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Comparison of design of intraocular lens versus the material for PCO prevention

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International Journal of Ophthalmology(English edition) 2012年第1期5卷 59-63页

作者： Sarbani Hazra Himangshu Palui geeta k vemuganti Department of Veterinary Surgery & Radiology West Bengal University of Animal and Fishery Sciences Kolkata India Prof & Dean Medical Sciences University of Hyderabad India Hyderabad India

AIM: To evaluate the influence of different intraocular lens(IOL) designs made of PMMA on posterior capsular opacification(PCO) and compare with foldable designs.· METHODS: Phacoemulsification and IOL implantation was done in one eye of 24 New Zealand White rabbits, with IOL of two different designs (Square edged or round edge) and two different materials(PMMA or HEMA). After three months, the animals were sacrificed and enucleated. Evaluation of PCO included posterior view, migration of anterior capsular epithelial cells to the posterior capsule following epithelial-mesenchymal transition were assessed by staining the histological sections of posterior capsule by hematoxylin-eosin(HE) and Periodic acid- Schiff (PAS). The IOLs were extracted and stained with HE to evaluate the presence of adherent cells on the lens surface. · RESULTS: PCO was highest with round edged rigid lens. There was no significant difference in the PCO between the square edged PMMA and square edged foldable lens.· CONCLUSION: It is the design of the IOL not the material that offers protection on PCO formation.

关键词： design material of intraocular lens posterior capsular opacification

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Effect of promoters on dynamics of gas-solid fluidized bed——Statistical and ANN approaches

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China Particuology 2007年第6期5卷 401-407页

作者： Y.k. Mohanty k.C. Biswal g.k. Roy B.P. Mohanty Department of Chemical Engineering GIET Gunupur 765 022 Rayagada Orissa India Department of Chemical Engineering NIT Rourkela 769008 Orissa India

In this study, a bubbling fluidized bed column, 99 mm in inside diameter and 960 mm in height, was used to investigate the effect of rod and disc promoters on fluctuation and expansion ratios. Factorial design （statistical approach） and artificial neural network （ANN） models were developed to predict the fluctuation and expansion ratios in this gas-solid fluidized bed with varying gas flow rates, bed heights, particle sizes and densities. The fluctuation and expansion predicted using these statistical and ANN models, for beds with and without promoters, were found to agree well with corresponding experiments. The statistical model was found to be superior to the ANN model due to its ability to take into account both individual and interactive effects. The rod promoters were found to be more effective in reducing bed fluctuation, and in increasing bed expansion at high gas mass velocities.

关键词： gas-solid fluidized bed Fluctuation ratio Expansion ratio Promoter Factorial design Artificial neural network

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Advancement in utilization of magnetic resonance imaging and biomarkers in the understanding of schizophrenia

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World Journal of Clinical Cases 2025年第1期13卷 11-15页

作者： Aidan k Tirpack Danyaal g Buttar Mandeep kaur Department of Psychiatry Campbell University School of Osteopathic MedicineBuies CreekNC 27506United States Department of Psychiatry and Behavioral Health Mercyhealth Hospital and Trauma CenterJanesvilleWI 53548United States

Historically,psychiatric diagnoses have been made based on patient’s reported symptoms applying the criteria from diagnostic and statistical manual of mental *** utilization of neuroimaging or biomarkers to make the diagnosis and manage psychiatric disorders remains a distant *** have been several studies that examine brain imaging in psychiatric disorders,but more work is needed to elucidate the complexities of the human *** this editorial,we examine two articles by Xu et al and Stoyanov et al,that show developments in the direction of using neuroimaging to examine the brains of people with schizo-phrenia and *** et al used magnetic resonance imaging to examine the brain structure of patients with schizophrenia,in addition to examining neurotransmitter levels as *** et al used functional magnetic resonance imaging to look at modulation of different neural circuits by diagnostic-specific scales in patients with schizophrenia and *** two studies provide crucial evidence in advancing our understanding of the brain in prevalent psychiatric disorders.

关键词： Schizophrenia Magnetic resonance imaging Biomarkers Neurotransmitters Psychiatric disorders

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PROCESSINg TECHNOLOgIES FOR TURBINE COMPONENTS

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Acta Metallurgica Sinica(English Letters) 1996年第6期9卷 453-456页

作者： g.k. Bouse(Howmet Corporation Technical Center, Whitehall, Michigan, USA ) Howmet Corp Technical Cent Whitehall United States

Processing technologies for the mass production of aero and industrial gas turbine engine hot-section components made by the investment casting process are discussed. Howmet Corporation is involved in most of these technologies because of the end-user's desire for a finished part. These technologies include pattern-making (using a variety of wax and plastic materials, rapid prototyping, 'hard' tooling, and wax injection machines), silica-zircon and alumina cores that produce internal passages, shells for very large parts and for use with alloys containing reactive elements, Ni, Co, and Ti alloys that are cleaner than ever before,zirconia, silica, and mullite crucibles;computer-controls,robotics,and the manufacture of vacuum casting furnaces; cleaning and finishing equipment designed to quickly process parts with minimal variation,and post-casting operations including hot isostatic pressing (HIP),heat treating,coating,and machining. These technologies will be discussed along with process capabilities required by today's turbine hot-section component suppliers.

关键词： investment casting rapid prototyping,vacuum induction melting(VIM),

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An SPH Framework for Earthquake-Induced Liquefaction Hazard Assessment of geotechnical Structures

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 251-277页

作者： Sourabh Mhaski g.V.Ramana Department of Civil Engineering Indian Institute of Technology DelhiNew Delhi110016India

Earthquake-induced soil liquefaction poses significant risks to the stability of geotechnical structures *** understanding of the liquefaction triggering,and the post-failure large deformation behaviour is essential for designing resilient *** present study develops a Smoothed Particle Hydrodynamics(SPH)framework for earthquake-induced liquefaction hazard assessment of geotechnical *** coupled flowdeformation behaviour of soils subjected to cyclic loading is described using the PM4Sand model implemented in a three-phase,single-layer SPH framework.A staggered discretisation scheme based on the stress particle SPH approach is adopted to minimise numerical inaccuracies caused by zero-energy modes and tensile ***,non-reflecting boundary conditions for seismic analysis of semi-infinite soil domains using the SPH method are *** numerical framework is employed for the analysis of cyclic direct simple shear test,seismic analysis of a level ground site,and liquefaction-induced failure of the Lower San Fernando *** agreement for liquefaction triggering and post-failure behaviour demonstrates that the SPH framework can be utilised to assess the effect of seismic loading on field-scale geotechnical *** present study also serves as the basis for future advancements of the SPH method for applications related to earthquake geotechnical engineering.

关键词： Earthquake seismic liquefaction stress particle PM4Sand smoothed particle hydrodynamics(SPH)

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STUDY ON CO-ELECTRODEPOSITION OF Bi-Fe ALLOY FILMS IN ORgANIC BATH

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Acta Metallurgica Sinica(English Letters) 2003年第6期16卷 507-512页

作者： g.R. Li, Y.X. Tong and g.k. LiuSchool of Chemistry and Chemical Engineering, Zhongshan University, guangzhou 510275, China School of Chemistry and Chemical Engineering Zhongshan University Guangzhou 510275 China

The cyclic voltametry and potentiostatic electrolysis was used to investigate the preparation of Bi-Fe alloy films in LiClO4-DMSO (dimethylsulfoxide) system. The effects of several factors including the potential of deposition, current density and concentration of iron and bismuth in the solution on the Fe content in the alloy deposits were studied. Experimental results indicated that the amorphous alloy films of Bi-Fe containing Fe 4.40wt%-33.67wt% could be prepared by controlling the system composition and deposition conditions. They were gray, uniform, metallic luster and adhered firmly to the copper substrates analyzed by EDS, SEM and XRD. After heat treatment of crystallization at 270℃ for 1h, the crystal phase of Bi-Fe can be found in XRD patterns.

关键词： bismuth Bi-Fe alloy film electrodeposition DMSO (dimethyl-sulfoxide)

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