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Chini Deep Sankar,Mondal Niladri,Kar Avijit,Bunholi Ingrid,Singh Sourav,Ghosh Pratik,Patra Prasanta,Patra Shampa,Patra Bidhan Chandra 한국해양과학기술원 2023 Ocean science journal Vol.58 No.2
Marine fishes are one of the important factors in stabilizing the local aquatic ecosystem and regulating the nutritional socioeconomy of local fisher folks. The recent increases in anthropogenic activity, pollution and overfishing have led to the decline of marine fish species richness and their local aquatic habitats. In this study we sought to determine the inter-relationship between water quality, anthropogenic activity, and fish landing stations through a 31 km stretch of the East Midnapore coast in West Bengal, India which is known for its tourist destinations. The study was conducted monthly on different trawler fish landing sites from Dec 2018 to Dec 2021. During this period, we took fish samples and identified them. We obtained water quality data regarding Sea Surface Temperature (SST), Concentration of Chlorophyll-a (Chl-a), Turbidity, and Dissolved Oxygen (DO) in order to identify further correlation between the water quality analysis and species diversity. 154 numbers of commercially important marine fish species were documented. As per the IUCN database, 13% of the total fish species fall under the red list category and 16% of the species reveal a decreasing population trend. The availability of those red-listed fish throughout the season has been shown in the matrix plot to detect their gradual decrease in sighting. After analyzing the water quality data, we found out that DO, SST, Turbidity, and Chl-a correlate with the species richness on some sites and the water parameters are also differs during the seasons. Both fish species richness and water quality have been affected on those fish landing sites which have been subject to heavy anthropogenic loads.
Alessia Chini,Michele Manigrasso,Grazia Cantore,Rosa Maione,Marco Milone,Francesco Maione,Giovanni Domenico De Palma 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.2
Colorectal cancer is an important cause of morbidity and mortality worldwide. Optical colonoscopy (OC) is widely accepted as thereference standard for the screening of colorectal polyps and cancers, and computed tomography colonography (CTC) is a validalternative to OC. The purpose of this review was to assess the diagnostic accuracy of OC and CTC for colorectal lesions. A literaturesearch was performed in PubMed, Embase, and Cochrane Library, and 18 articles were included. CTC has emerged in recent years asa potential screening examination with high accuracy for the detection of colorectal lesions. However, the clinical application of CTCas a screening technique is limited because it is highly dependent on the size of the lesions and has poor performance in detectingindividual lesions <5 mm or flat lesions, which, although rarely, can have a malignant potential.
Reza Chini,Mohammadhassan Behroozi,Amir Hossein Shamekhi,Ehsan Samadani 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
One essential part of automated diagnosis systems for SI engines is due to elements of air path system. The faults occur in this subsystem can result in deviation of air-fuel ratio, which causes increased emissions due to incomplete combustion, misfire and especially loss of power and drivability problems. In this article, a model-based diagnosis system for air-path of an SI engine is constructed. Thus, an adiabatic nonlinear four-state dynamic model of an SI engine is utilized for fault simulations. In the next step, a diagnosis system is designed in the framework of Multilayer Perceptron (MLP) Artificial Neural Network (ANN) classifier. Simulation results show that the constructed diagnosis system for six fault modes considering all three kinds of common faults is applied effectively. In this paper, the Manifold Air Temperature (MAT) sensor, Fuel Injector (FAG) and Throttle Actuator (THAG) faults which comparatively have been evaluated less than other elements in previous relative neural network based works, are also taken into account. As another remarkable aspect of this work, all classes of faults are diagnosed in their full possible over reading (positive) and under reading (negative) ranges.
Endoscopic clipping in non-variceal upper gastrointestinal bleeding treatment
Giuseppe Galloro,Angelo Zullo,Gaetano Luglio,Alessia Chini,Donato Alessandro Telesca,Rosa Maione,Matteo Pollastro,Giovanni Domenico De Palma,Raffaele Manta 대한소화기내시경학회 2022 Clinical Endoscopy Vol.55 No.3
Since the earliest reports, advanced clipping systems have been developed, and it is possible to choose among many models with differentstructural and technical features. The main drawback of through-the-scope clips is their small size, which allows the compressionof limited amounts of tissue needed for large-size vessel treatment. Therefore, the over-the-scope clip system was realized, allowing alarger and stronger mechanical compression of large tissue areas, with excellent results in achieving a definitive hemostasis in difficultcases. Many studies have analyzed the indications and efficacy of two-pronged endoclips and have shown good results for initial andpermanent hemostasis. The aim of this review was to provide updated information on indications, positioning techniques, and resultsof clip application for endoscopic treatment of upper gastrointestinal non-variceal bleeding lesions.
Ehsan Samadani,Mohammadhassan Behroozi,Amirhossein Shamekhi,Reza Chini 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
In diesel engines, applying design techniques such as computer simulations has become a necessity in view of the fact that these methods can result in small amounts of NOx and SOOT and a reasonable fuel economy. To achieve such a target, multi-objective optimization methodology is a good choice In this paper, this technique is implemented on a closed cycle two-zone combustion model of a DI diesel engine. The combustion model is developed by Matlab programming and validated by a single cylinder Ricardo data obtained from the engine. The main outputs of this model are NOx, SOOT and engine performance. The optimization goal is to minimize NOx and SOOT at the same time while maximizing engine performance. Injection timing, injection duration and AFR (Air-fuel ratio) are selected from engine inputs as design variables. A neural network model of the engine is developed based on model data as an alternative for the complicated and time-consuming combustion model in a wide range of engine operation. Design variables are optimized using GA (Genetic Algorithm). Here, three common algorithms for multi-objective optimization, MOGA, NSGA-II, and SPEA2+ are applied and the results are compared.
S.R. Haldar,A. Nayak,T.K. Chini,S. Bhunia 한국물리학회 2010 Current Applied Physics Vol.10 No.3
We have reported low temperature growth (300 ℃) of ZnO nanorod flower structures by depositing zinc acetate vapor on Ge (100) substrate in the form of a jet using chemical vapor condensation technique. The flowers were comprised of hierarchical arrangement of highly crystalline ZnO nanorods oriented isotropically around a common nucleus. The temperature window for stability of these structures was found to be very narrow and the formation of the flowers was highly depended on the type of the substrates used. The flower morphology changed to a different hemispherical shape when the growth temperature was increased by only 50 ℃ while decreasing the growth temperature of the same degrees resulted in an amorphous deposition of ZnO. The temperature and substrate effect has been explained on the basis of adatom kinetics during growth. X-ray diffraction and TEM study revealed wurtzite ZnO nanorods with lattice constants a and c of 3.2 and 5.19 Å, respectively. The flower structures showed strong room temperature photoluminescence having pure excitonic transition at around 3.298 eV.