Archives-J 

Lots of research and developments have been made in accepting the behavior of engineering materials when machining at higher cutting conditions. Developments attained from research and development activities in this area have particularly enhanced the machining of difficult-to-cut titanium alloys that have traditionally exhibited low machinability due to poor thermal conductivity, high strength at elevated temperature, resistance to wear and chemical degradation, etc. These alloys are used extensively where the strength-to-weight ratio and corrosion resistance are of the utmost significance. Even though there have been prodigious developments in the development of cutting tool materials which have significantly improved the machinability of a large number of metallic materials, including cast irons, steels and some high temperature alloys such as nickel-based alloys, no equivalent development has been made for cutting titanium alloys due primarily to their abnormal characteristics. A worthy accepting of the cutting tool materials, cutting conditions and functionality of the machined component will lead to efficient and economic machining of titanium base super alloys. This paper evaluation the main problems associated with the machining of titanium as well as tool wear, the mechanisms responsible for tool failure. Step growth in productivity, hence lower manufacturing cost, without contrary result on the surface finish and surface integrity of the machined component. It was found that the straight tungsten carbide (WC/Co) cutting utensils remain to maintain their superiority in almost all machining processes of titanium alloys, whilst CVD coated carbides and ceramics have not replaced cemented carbides due to their reactivity with titanium and their relatively low fracture toughness as well as the poor thermal conductivity of most ceramics. Cubic Nitride Boron (CBN) outfits are also normally used for machining harder alloys such as titanium and nickel alloys. The implements are expected to endure the heat and pressure developed when machining at higher cutting conditions because of their high hardness and melting point. An effort has been made to debate special machining methods, such as Rotary cutting, High pressure coolant delivery, Cryogenic cooling, Minimum Quantity Lubrication and the use of ledge tools, which have shown some success in the machining of titanium alloys.

The Bezold-Jarisch reflex is a cardioinhibitory reflex characterized by a triad of signs (bradycardia, hypotension, and apnea) and involved in some cases of vasovagal syncope. Its physiopathology is still largely unknown. We report two cases of young patients presenting with vasovagal syncope and whose autonomic system investigation showed a profile highly suggestive of Bezold-Jarisch reflex. 

The COVID-19 pandemic has caused lots of crises, losses, and damages to the people's livelihoods. Undoubtedly, vaccination is the most essential and urgent solution but this solely may not resolve the issue in long term. Since the uneven and partial distribution of approved vaccines further complicates the issue. Besides, none of the present vaccines confer cent percent immunity. Furthermore, there are concerns about the longevity and efficacy of these vaccines as the new variants may evade current vaccines. Moreover, there is a minority of people with allergic reactions to these vaccines, and the side effects of the present vaccines in the long term are not yet known. Indeed, a multilateral approach is required to manage this pandemic. The COVID-19 is primarily a respiratory disease. The establishment of reliable procedures for regular disinfection of the respiratory system may help restrain the pandemic. In this proposal piece, a condensed description of traditional approaches to respiratory infectious illnesses is provided. These may inspire the development of preventive packages to protect people fairly against this contagious disease.

The aim of the present study is Legislative review of criminal policy towards the prevention of drug offenses. Position, role and importance of law in society makes an order, regulation, reduced social costs, etc. The basic principles and logic to struggle with drugs is law. It brings a sense of urgency for researchers that in Iran what is the status of preventive law? However given that drug crimes and has become one of the most sophisticated and the most important organized crime, Damage of personal, social, political and economic is essential to deal with criminal comprehensive policy.

Benign tracheoesophageal fistula is a rare clinical entity and a rare complication of prolonged intubation and tracheostomy, we report the case of 20-year-old woman with a tracheoesophageal fistula secondary to mechanical ventilation. Ventilation difficulties and the recurrent lung infections were the mean symptoms, Early diagnosis was confirmed by bronchoscopy then the patient underwent a surgical repair of the fistula and interposition of a muscle flap. Acquired nonmalignant tracheoesophageal fistula is a preventable disease but this complication can still occur. The surgical treatment remains the best option.

Individual differences, attitude toward cultural perspectives of the target language community being its most significant aspect, are assumed to play a crucial role in the development of pragmatic competence. To investigate this issue, this study attempted to assess the relationship between integrative attitude and pragmatic comprehension. A multiple choice pragmatic listening test and a Likert-scaled attitude questionnaire were used to collect data from 63 undergraduate students of Teaching English as a Foreign Language at three universities in Iran. The findings suggested that integrative attitude has a significant effect on pragmatic comprehension. Therefore, it was recommended to complement classroom instructions with popular cultural perspectives of the target language community.

The monosodium glutamate is commonly used food flavoring agent used worldwide. The present experimental study investigated the effects of orally administered monosodium glutamate (MSG) on the histology of testes of adult male Wistar rat model. Forty adult male Wistar rats were divided into three groups; Group A served as controls, Group B. received MSG orally (1 mg/kg), Group C. received MSG orally (2mg/kg) and Group D. received MSG orally (4 mg/kg). Tissue sections of testis from rats in the control (Group A), showed the normal histological features for the seminiferous tubules and interstices. Group B rats revealed normal spermatogenic cells, many spermatids, and edematous interstitial spaces with mild hyperemia. The Group C rats showed inflammatory exudates in interstitial spaces, spermatids were fewer and changes of degeneration of Leydig cells. Group D rats showed severely reduced spermatogonia, very few to totally absent spermatids in the tubules. Sertoli cells were reduced in the tissue sections. The Leydig cells were also diminished in count with severe vacuolar degeneration. Overall, the MSG treated rats showed altered histology of testicular tissue. The present study concluded that the glutamate has deleterious effects on the testicular histology in adult male Wistar rats particularly in high dose therefore caution must be taken for its frequent use in large quantities as a food flavor additive.

Based on many studies and research conducted on learning a foreign language, it can be claimed that most of the students experience a great difficulty in reading and comprehending the texts in foreign language. It seems that reading and comprehending foreign language materials can be improved if teachers do research to find ways through which readers could be helped to get more information from the text. Therefore, compensation reading strategies can be considered as certain types of enabling activities because they equip the reader with a base knowledge necessary for dealing with the content of the structure of materials. So the present study was an attempt to answer the research questions considering the effects of teaching explicit vs implicit compensation strategies on the third grade high school students’ reading comprehension performance. 110 students took part in this study. The researcher provided them with a language proficiency test taken from NELSON test. Then based on their scores, the mean and standard deviation were computed .The students whose scores fell in the range of “mean ±1standard deviation” were selected for the research study. Therefore, 36 students in one class and 35 students in the other participated as the subjects of the study. Then a standard pre-test (Master TOEFL and Arco TOFEL) was given to the subjects in both groups before any treatment. Finally, a standard post- test (Master TOEFL and Arco TOEFL) was given to the subjects in both groups to prove or disprove the Null hypothesis. Obtaining the needed data, the researcher ran the necessary statistical procedures. It was proved that the experimental group which being exposed to the explicit compensation reading strategies showed higher level of performance on post-test than the control group. Therefore the main null hypothesis, teaching explicit compensation reading strategies has no effect on the reading comprehension of the third- grade high school students was rejected.

In this study, I explore the impact of self-efficacy of individuals on their job performance in the banking sector of Spain. In particular, this study explores different prevalent literature on self-efficacy and how it can lead to improvement or deterioration of individual’s performance in banks. The results highlight an important corporate level phenomenon. The results on the basis of robust statistical techniques support the proposed key arguments of the study.

The dowry, this customary institution, was certainly misunderstood by the authors of the written law. The interpretations flow from it and the decision to integrate it or not into positive law falls under the sovereignty of each State. However, it is asked to those who made a condition of the marriage (1), to be able to control overflows of speculation to avoid falling through the tarification. Eastern Democratic Republic of Congo (Kinshasa), it is mainly about goats, cows in number apparently exaggerated. The bill presented by the family-in-law to their future son-in-law is often inflated as marriage takes a long time to come to fruition and this state of affairs discourages many marriage candidates. Hence the phenomenon of ''Yaka tovanda'' (come and stay together.) Failing the dowry or dragging, the divorce quickly arrived.1This is the case in the DRC: Family Code, Law No. 16/008 of 15 July 2016 amending and supplementing Law No. 87-010 of 1 August 1987 on the Family Code. The future spouse and his family must agree with the parents of the future wife of a gift of property and / or money that constitute the dowry for the benefit of the parents of the future wife. Marriage can only be celebrated if the dowry has actually been