http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Squamous Cell Carcinoma in Exstrophy of the Bladder
Pramod Kumar Sharma,Praveen Kumar Pandey,Mukesh Kumar Vijay,Malay Kumar Bera,Jitendra Pratap Singh,Kaushik Saha 대한비뇨의학회 2013 Investigative and Clinical Urology Vol.54 No.8
Exstrophy of the bladder is a rare congenital anomaly with an incidence of about 1 per 50,000 newborns. The malignant potential of the exstrophied bladder mucosa is well known; 95% are adenocarcinomas, and 3% to 5% are squamous cell carcinomas. Most of the malignant tumors (60%) associated with an exstrophy of the bladder occur during the fourth and fifth decades of life. Of the remaining, about 20% each occur after 60 years and before 40 years. Here we present a case in which squamous cell carcinoma developed in an unrepaired exstrophy of the bladder. We present the management of the case and a brief review of the literature.
3D Printing: It’s Microfluidic Functions and Environmental Impacts
Abhishek Sharma,Jitendra K. Pandey,Surajit Mondal,Amit Kumar Mondal,Soumadeep Baksi,Ravi Kumar Patel,추원식 한국정밀공학회 2017 International Journal of Precision Engineering and Vol.4 No.3
Innovative micro products essential for the utilization of a wide variety of macro subjects have complicated three-dimensional (3D) microstructures in addition to a high aspect ratio. Till date, many micro manufacturing processes have been developed, but a specific class of such processes is applicable for fabrication of true 3D micro assembly. The aptitude to process a broad range of materials and the ability to fabricate functional and geometrically complicated, 3D microstructures provides the additive manufacturing (AM) processes which significant profits over traditional methods, such as lithography-based or micromachining approaches investigated widely in the past. In this paper, 3D micro-AM processes have been classified into three main groups, including scalable micro-AM systems, 3D direct writing, and hybrid processes, and the key processes have been reviewed comprehensively. Principle and recent progress of each 3D micro-AM process have been described, and the advantages and disadvantages of each process have low-cost along with its occupational health safety & environmental issues.
A Review of Mobile Robots: Applications and Future Prospect
Nitin Sharma,Jitendra Kumar Pandey,Surajit Mondal 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.24 No.9
Approximately eight decades ago, during World War II, the concept of intelligent robots capable of independent arm movement began to emerge as computer science and electronics merged with advancements in mechanical engineering. This marked the starting point of a thriving industry focused on research and development in mobile robotics. In recent years, there has been a growing association between robotics and artificial intelligence, aiming to enable robots to make autonomous decisions akin to human cognition. To achieve this objective, researchers are actively exploring the integration of artificial neural networks with mechatronic robots. These intelligent and self-decision-making robots possess the potential to revolutionize human capabilities and elevate our intelligence to unprecedented levels. In various physical service sectors such as cleaning, security, and other tasks that don't require creative or analytical thinking, these robots can efficiently carry out the assigned responsibilities. Moreover, robots have the potential to play a significant role in military operations, eliminating the need for human lives to be sacrificed in warfare. This review article aims to explore the advancements in mobile robotics since their inception nearly 80 years ago. It will delve into the detailed applications of these robots across different sectors and discuss their profound effects on contemporary human lives and industrial landscapes.
Chu, Won-Shik,Jeong, Suk-Yong,Pandey, Jitendra Kumar,Ahn, Sung-Hoon,Lee, Jae-Hoon,Chi, Sang-Cheol Korean Society for Precision Engineering 2008 International Journal of Precision Engineering and Vol.9 No.2
The Rapid Prototyping (RP) technology has advanced in many application areas. In this research, two different types, cylinder and scaffold, of implantable Drug Delivery System (DDS) were fabricated using Nano Composite Deposition System (NCDS), one of the RP systems. The anti-cancer drug (5-fluorouracil, 5-FU), biodegradable polymer (PLGA(85: 15)), and bio ceramic (Hydroxyapatite, HA) were used to form drug-polymer composite material. Both types of DDS were evaluated in vivo environment for two weeks. For evaluation, the cumulative drug release and shape stability were measured. Test results showed that the scaffold DDS provide higher cumulative drug release and has better stability than cylinder DDS.
The Processing and Mechanical Performance of Cellulose Nanofiber-based Composites
Nakagaito, Antonio Norio,Takagi, Hitoshi,Pandey, Jitendra Kumar Korean Society of Ocean Engineers 2011 International journal of ocean system engineering Vol.1 No.4
Nanocomposites based on cellulose nanofibers have been studied for a considerable time since its first introduction, however real applications seem to have hardly developed to these days. The high-strength of cellulose nanofibers suggests the potential to reinforce plastics to produce composites for semi-structural or even structural applications. This paper discusses some of the attempts to produce such high-strength nanocomposites and the main challenges that have to be overcome to bring them into commercial products.
Sonal Singh,Rishabh Sharma,Girdhar Joshi,Jitendra Kumar Pandey 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.2
We present systematic investigations on the relationship between interface formation and enhanced photocatalytic activity of ZnO-BiVO4 nanocomposite based on experimental techniques supported by theoretical calculations. The interaction between ZnO (101) nanosheet and BiVO4 surface at the heterojunction was explored to study the charge transfer and separation mechanism responsible for enhanced photocatalytic response. XPS results and DFT computations mutually validate the reasonable existence of ZnO-BiVO4 interface. The nanocomposite photocatalytic activity, tested for various weight ratios, was found to be highest for ZnO-BiVO4 (1 : 1) under visible-light irradiation. Moreover, the percentage removal of MB was found to be greater than RhB for the same time duration. Steady state and time resolve photoluminescence were employed to understand the carrier lifetime and emissivity. Visible light driven high photoactivity exhibited by ZnO-BiVO4 (1 : 1) was ascribed to the formation of intermediate band and comparatively low recombination rate, which facilitates the separation of electron-hole pairs. Based on the theoretical outcome, we found that valence band maximum was occupied by Bi s orbital and conduction band minimum was occupied by Zn s orbital, which indicates the maximum electron transition from BiVO4 valence band to ZnO conduction band in ZnO-BiVO4 composite. These results demonstrated that heterojunction semiconductors are an effective strategy that can be successfully applied to develop photocatalysts that respond to visible light for organic pollutant degradation.
Won-Shik Chu,Suk-Yong Jeong,Jitendra Kumar Pandey,Sung-Hoon Ahn,Jae-Hoon Lee,Sang-Cheol Chi 한국정밀공학회 2008 International Journal of Precision Engineering and Vol.9 No.2
The Rapid Prototyping (RP) technology has advanced in many application areas. In this research, two different types, cylinder and scaffold. of implantable Drug Delivery System (DDS) were fabricated using Nano Composite Deposition System (NCDS), one of the RP systems. The anti-cancer drug (5-fluorouracil, 5-FU), biodegradable polymer (PLGA(85:15)), and bio ceramic (Hydroxyapatite, HA) were used to form drug-polymer composite material. Both types of DDS were evaluated in vivo environment for two weeks. For evaluation, the cumulative drug release and shape stability were measured. Test results showed that the scaffold DDS provide higher cumulative drug release and has better stability than cylinder DDS.