The Usage of a Locomotive Tractive Power in the Different Operating Modes and the Efficiency Control_Crimson Publisher

The Usage of a Locomotive Tractive Power in the Different Operating Modes and the Efficiency Control by Alexander Jr Zarifyan in Crimson Publishers: Open Journal of Civil Engineering

A significant share of energy consumed by rail systems is used to move the trains [1]. In our opinion, it is necessary to study carefully the efficiency of freight electric locomotives in different modes of operation.

Modern freight electric locomotives have a multi-engine electric traction drive (up to 16 traction motors) with tractive effort control system on each axle. Therefore, the approach of the Scalable Power Control Technology [2,3], which regulates the quantity of locomotive traction motors (TM) in traction mode, seems quite reasonable. In our case, if full locomotive tractive power is not needed within operation, the redundant motors must be automatically switched off [4,5]. But when additional tractive power is required, the locomotive must use sufficient number of motors.

https://crimsonpublishers.com/acet/fulltext/ACET.000529.php

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Soil Improvement for Present and Future: Crimson Publishers

Soil Improvement for Present and Future by Shulbhi Verma* in Journal of Biotechnology & Bioresearch - Crimson Publishers: Bioresearch

Soil is the nonrenewable, finite natural asset for the earth and the living beings on the blue planet. Today 9 billion people required quality of food for better health and long survival. Pressure increased on soil in comparison to the past due to increase in population for more and nutritious food production. The safe ecosystem with food production makes challenge more difficult. There are many factors responsible for the safe ecosystem among that healthy soil makes remarkable contribution in the development of plant and could be considered very essential factor. Our main concern should be for the protection of soil physical, chemical and biological property with production. During last two decades food crops decreased, and nonfood crop cultivation increased. Farmers adopted intensive cropping patterns of commercial crops in place of more balance cereal legumes rotation. Intensive cultivation leads to removal large quantities of nutrition from the soil which resists to in loss of soil fertility. The farmers maintain productivity of soil by applying chemical fertilizer instead of organic fertilizer. Such cropping system makes the soil condition very pitiful because it creates disturbance in the soil physical, chemical and biological condition

https://crimsonpublishers.com/jbb/pdf/JBB.000513.pdf

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Application of Queuing Theory to Larfarge Cement Transportation System for Truck/Loader Optimazation-Crimson Publishers

Application of Queuing Theory to Larfarge Cement Transportation System for Truck/Loader Optimazation by Afeni Thomas B in Aspects in Mining & Mineral Science: Crimson Publishers-journal of Mining& Mineral Science

Surface mining is the most common mining method worldwide; open pit mining accounts for more than 60% of all surface output. This project uses queuing technique to optimize the transportation at Lafarge WAPCO (Sagamu plant) Nigeria. Queuing theory was developed to model systems that provide service for randomly arising demands and predict the behaviour of such systems. Time of arrival at excavator area (hr/min/sec), time of first load by excavator into the truck (hr/min/sec), number of loads, time of departure from the excavator (hr/min/sec) and time taken to load trucks gotten from the Lafarge (Sagamu plant) was analysed to develop a model M/M/1: FCFS/∞/∞, based on the assumption of single channel and single server with infinite number of queues. The model was used to calculate the arrival rate, service rate and number of server which at the end of it gives 7turcks/hour, 21trucks/hour and 1loader respectively. @risk software was used to fit both service and inter-arrival into exponential distribution. The result shows that as the size of the haulage truck being used increases, shovel productivity increases and truck productivity decreases. An effective number of trucks must be chosen that will effectively utilize idle time, increase productivity and reduce cost of production to the barest minimum. The idle time gotten is 66.6%; this indicates that an additional 8 to 9 trucks can be added to the company truck fleet to make use of the idle time; since time translate to cost.

https://crimsonpublishers.com/amms/fulltext/AMMS.000528.php

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Advances in The Therapy of Depression: Crimson Publishers

Advances in The Therapy of Depression by Ghassan Haddad in Techniques in Neurosurgery & Neurology: Crimson Publishers_Journal of Neurology Neurosurgery and Psychiatry

Depression is one of the most common serious medical and psychiatric disorders, with greater than 200 million adults worldwide suffering from major depressive disorder (MDD) at any given time, according to a 2003 report by the World Health Organization titled Investing in Mental Health. According to the U.S. National Comorbidity Survey Replication published in 2007, more than 16 million adults in the United States, which represents approximately 6.7% of itsentire adult population, will suffer from MDD in a 12-month period. The quest to come up with a superior antidepressant is in full effect among biotech and pharmaceutical companies. Although there are some companies that are still tweaking various formulations of serotonergic, noradrenergic, and dopaminergic substances i.e. triple reuptake inhibitors others are thinking outside the box.

https://crimsonpublishers.com/tnn/fulltext/TNN.000526.php

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Study of Methanolic Extract of Leaves Calotropis gigantea (L.) As an Anti-Solar- Crimson Publishers

Study of Methanolic Extract of Leaves Calotropis gigantea (L.) As an Anti-Solar by Gharge Varsha Gajanan in Advances in Complementary & Alternative Medicine- Crimson Publishers: Journal of Alternative and Complementary Medicine

Objective: The present study aimed at the phytochemical examination and anti-solar activity of Calotropis gigantea L. (leaf) methonolic extract has more flavonoid content based on this chemical substance photo protective activity was evaluated using UV visible spectrophotometry, where the method is diffused transmittance and the range of UV-visible about 200-400nm.

Methods: The pulverized dried Calotropis gigantea L. leaves were extracted with Methanol using soxhlet apparatus. Methanol extract were filtered & evaporated to dryness. The photo protective activity was evaluated by using UV visible spectrophotometry, where the method it is diffused transmittance and the range of UV-visible about 200-400nm for absorption.

Results: The UV scanning absorption spectra of the extract showed very strong absorption at 0.273A with max at 397nm.

Conclusion: The extract has an ability to absorb in the entire UV range.

https://crimsonpublishers.com/acam/fulltext/ACAM.000518.php

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