300 research outputs found
Sanal bahis siteleri mi ya da sanal kumar siteleri mi?
Full text linkTürkiye’de kumar, yasal düzenlemelerle yasak kapsamında engellenmiştir. Bahis oyunları ise serbesttir. Dolayısıyla kumar için kanuni ve cezai yaptırımlar uygulanmaktadır. Bahis oyunları, resmi olarak faaliyetlerini gün geçtikçe artırmaktadır. Toplumun söz konusu oyunlara ilgisi zaman içinde giderek çoğalmaktadır. Bu çalışmada, devletin ilgili kurumlarından elektronik bayilik sözleşmesi imzalamış olan bilyoner.com, nesine.com, misli.com, oley.com, tuttur.com ve birebin.com incelenmiştir. Devlet, sahip olduğu Milli Piyango İdaresi, Spor Toto Teşkilatı ve Türkiye Jokey Kulübü vasıtasıyla bahis oyunlarını düzenlemektedir. Bahis oyunlarının diğer adı kumardır. Sanal bahis sitelerine internet üzerinden erişim kolaylığı bu oyunları oynama sıklığını artırmaktadır. Sanal bahis siteleri de toplum sağlığını korumak için yasak kapsamına alınmalıdır. Yasal bahis sitelerine erişim engeli getirilmelidir. Bu çalışmada araştırma yöntemi olarak alan yazın taraması kullanılmıştır.Gambling is forbidden in Turkey, but betting games are free. Therefore, criminal sanctions are imposed for gambling. Bettinggames are increasing their activities under the legal umbrella day by day. Society's interest in the games in question is also increasing over time. In this study, bilyoner.com, nesine.com, misli.com, oley.com, tuttur.com, and birebin.com, which have anelectronic dealership contract, were investigated. The State organizes betting games through its National LotteryAdministration, Sports Toto Organization and the Jockey Club of Turkey. Games of betting have one name, which is gambling. The ease of access to online betting sites over the internet also enhances the frequency of playing these games. Onlinebetting sites should also be covered by the ban to protect the health of the community. Access to the sites that legal play online betting games must be prohibited. This paper reviews the field works as a research method
Sanal Flow Choking Leads to Hemorrhagic Stroke and Other Neurological Disorders in Earth and Human Spaceflight
No full textEvidences are escalating on the diverse neurological disorders associated with COVID-19 pandemic due to the nanoscale Sanal flow choking (PMC7267099). The Sanal flow choking occurs at relatively high and low blood viscosity. Sanal flow choking leads to aneurysm, hemorrhagic-stroke and other neurological-disorders if the vessel geometry is having divergence, bifurcation, stenosis and/or occlusion regions (PMC7933821). Nanoscale Sanal flow choking is more susceptible at microgravity condition due to altered variations of blood viscosity, turbulence and the blood pressure ratio (BPR). Astronauts/Cosmonauts experienced neurological disorders during human spaceflight and thereafter. V.R.S.Kumar et al. (2021) reported that the asymptomatic episodes in the cardiovascular system are due to the internal flow choking (Biofluid/ Sanal flow choking) at a critical blood pressure ratio (BPR), which is regulated by the biofluid/blood heat capacity ratio (BHCR). As the pressure of the nanoscale biofluid / non-continuum-flows rises, fluid viscosity increases and average-mean-free-path diminishes and thus, the Knudsen number lowers heading to a zero-slip wall-boundary condition with the compressible flow regime, which increases the risk of Sanal flow choking and the shock wave generation causing asymptomatic cardiovascular disease. Microgravity environment decreases plasma volume and increases the hematocrit compared with the situation on the Earth surface, which increases the relative viscosity of blood causing an early Sanal flow choking. Herein, we established that the disproportionate blood-thinning treatment increases the risk of the nanoscale Sanal flow choking due to the enhanced boundary-layer-blockage factor. The risk could be diminished by concurrently reducing the viscosity of biofluid/ blood and flow-turbulence by increasing the thermal-tolerance-level in terms of BHCR and/or by decreasing the BPR through new drug discovery or using companion medicine with the traditional blood thinners or other health care management. We recommend all astronauts/cosmonauts should wear ambulatory blood pressure and thermal level monitoring devices similar to a wristwatch throughout the space travel for the diagnosis, prognosis and prevention of internal flow choking leading to asymptomatic cardiovascular disease including neurological disorders
Lopsided Blood-thinning Drug Increases the Risk of Internal Flow Choking and Shock Wave Generation Causing Asymptomatic Stroke
No full textLopsided Blood-thinning Drug Increases the Risk of Internal Flow Choking and Shock Wave Generation Causing Asymptomatic Stroke
Author Block: V R SANAL KUMAR, ISRO; S.K.Choudhary, AIIMS; P.K.Radhakrishnan, GU; Suresh Menon, GT; Vrishank Raghav, AU; K.K.N Namboodiri, Sapna E.Sreedharan, SCTIMST; Bharath R.S, Nichith C, C.Oommen, IISc; V.Sankar, IITK; A.Sukumaran, KCT; Arun K, DHMMC; A.Pal, Tharikaa R.K, AU, Abhirami R, AIMS.
Introduction
Consequence of lopsided blood-thinning-drug, lowering blood-viscosity (BV), is bleeding and very frequently asymptomatic-hemorrhage (AH) and the acute-heart-failure (AHF) happen. V.R.S.Kumar et al. (2020) reported that such asymptomatic episodes are due to the internal flow choking in the cardiovascular system (CVS) at a critical blood-pressure-ratio (BPR), which is regulated by biofluid/blood heat capacity ratio (BHCR).
Methods
The closed-form-analytical-methodology is used for correlating BV, BPR, BHCR, vessel geometry and ejection fraction (EF). In vitro method is used for the BHCR estimation of healthy subjects. In silico method is used for demonstrating the Sanal flow choking.
Results
The analytical models reveal that the relatively high and low BV are risk factors of internal flow choking. In vitro study shows that N2, O2, CO2 & Ar gases are predominant in fresh-blood samples of the healthy subjects at a temperature range of 37-400 C (98.6-1040 F), which increases the risk of flow-choking. In silico results demonstrated the Sanal flow choking followed by the shock wave generation and pressure-overshoot in a simulated artery with the divergent/bifurcation region.
Conclusions
An overdose of blood-thinning drug reduces BV and increases Reynolds number causing high-turbulence leading to the Sanal flow choking. Asymptomatic stroke could be diminished by concurrently lessening the BV and flow turbulence by rising thermal tolerance level in terms of BHCR or by decreasing the BPR. In conclusion, BPR must always be lower than 1.8257 as dictated by the lowest BHCR of the evolved gas for prohibiting asymptomatic stroke
Conceptual Design and Testing of a Dual-thrust Dual-head Electromagnetic Space Exploration Probe
No full textThis paper relates to the conceptual design and laboratory testing of a miniature dual-thrust dual-head electromagnetic space exploration probe, named as Jerin’s Space Exploration Probe (JSEP), capable of producing propulsive force continuously within the atmosphere and outer space. The JSEP consists of a magnetic piston and a vacuum cylinder with dual-head electromagnet having varying polarity. The total weight of the miniature system used for the static test is on the order of 1.2 Kg. The piston is made of permanent magnet which is kept inside a vacuum cylinder of diameter 3 cm and a total length of 12 cm. The vacuum cylinder is made of non-Magnetic material. The dual-heads are magnetized using a Direct Current (DC) from a solar cell and the reciprocating motion of the piston is being invoked by the polarity change using an onboard timing circuit. The forward motion of the JSEP is achieved by the momentum gained from the striking force of the magnetic piston to the Forward Dead Centre (FDC) of the vacuum cylinder. Whereas, the equal and opposite reacting force was nullified at the border of the Jerin’s Gap by initiating the polarity change of the Rearward Dead Centre (RDC) using a timing circuit, which has facilitated for prohibiting the backward movement of JSEP. The series of strikes done by the magnetic piston at the FDC enable the JSEP to travel an infinite distance limited to the life of the system with a minimum estimated span of 12 years
Sanal Flow Choking in Cardiovascular Systems is not a Scientific Fallacy but a Groundbreaking Concept Rooted in Cardiovascular Physiology
No full textSanal flow choking, a groundbreaking concept rooted in the fundamental principles of fluid dynamics and thermodynamics, redefines our understanding of cardiovascular physiology, particularly in the context of multi-phase flows and shock waves [1-15]. Contrary to critiques labeling it as a fallacy [16], this theory provides a crucial framework for addressing flow dynamics in extreme physiological conditions, such as decompression sickness and microgravity, where blood compressibility and gas evolution become prominent [3]. Our extensive research—spanning analytical [3-7], in silico [8-11], in vitro [8-10], and in vivo [1,2,15] studies—demonstrates that under certain pathological or environmental circumstances, blood exhibits compressible flow behavior, leading to multi-phase flow choking and subsequent shock wave formation [1,2]. This paradigm shift challenges the traditional assumption of blood as an incompressible fluid, which has limited the medical understanding of high-speed cardiovascular flow and trauma. Through the introduction of critical indices, such as the Lower Critical Hemorrhage Index (LCHI) and Upper Critical Hemorrhage Index (UCHI), Sanal flow choking offers a robust method to predict cardiovascular risks, including embolisms and vascular damage, induced by rapid pressure changes and gas bubble formation. Furthermore, these phenomena are influenced by the thermodynamic properties of blood and the coexistence of liquid and gas phases. In this rebuttal, we clarify the misinterpretations presented in a recent correspondence [16] against our articles [1-15] and reaffirm the validity of Sanal flow choking in cardiovascular research. We argue that compressible flow theory is indispensable for accurately modeling blood behavior in extreme conditions, and our findings underscore the necessity of revisiting long-held assumptions to prevent significant cardiovascular risks in both clinical and aerospace environments. It is clear that the correspondence [16] misinterprets our detailed analytical, in silico, in vitro, and animal in vivo research, as outlined in our review article in Physics of Fluids [1]. We wish to reaffirm that Sanal flow choking in cardiovascular systems is not a scientific fallacy, but a revolutionary concept grounded in established thermodynamic and fluid dynamics principles [3]. This concept challenges traditional views and provides new insights into the behavior of multiphase flows and shock waves in biological systems as detailed below
Diagnostic investigation of flame spread mechanism in dual-thrust solid propellant rocket motors
No full textNumerical studies have been carried out to examine the flame spread mechanism and the chamber dynamics of high-performance dual-thrust solid propellant rocket motors during the starting transient period of operation. Using a three-dimensional unsteady, shear-stress transport k-ω turbulence model, detailed parametric studies have been carried out to examine the aerodynamic choking and the existence/non-existence of a fluid throat at the transition region during the startup transient of dual-thrust motors (DTMs). In the numerical study, a fully implicit finite volume scheme of the compressible, density based Navier-Stokes equation is employed. We confirmed that, at the subsonic inflow conditions, there is a possibility of the occurrence of internal flow choking in dual-thrust motors with large length-to-diameter ratio (L/d > 44) due to the formation of a fluid throat at the beginning of the transition region induced by area blockage caused by boundary layerdisplacement thickness. We also confirmed that in such motors the choked flow becomes unchoked flow during the flame spread period due to the mass injection from the wall as a result of the thinning of the boundary layer thickness. We have demonstrated that without altering the grain geometry one can alter the flame spread mechanism by altering the igniter jet turbulence intensity, igniter gas temperature and propellant conductivity. Additionally, the numerical results of inert simulators of dual-thrust motors are compared with that of the case with propellant injection for establishing the physical situations of the choked and unchoked flow conditions during the starting transient period of operation of dual-thrust motors with high-propellant loading density
3D flow visualization and geometry optimization of cavity based scramjet combustors using k-ω model
No full textIn this paper numerical studies have been carried out to examine the intrinsic flow features of cavity based scramjet combustors with backward facing step and forward ramp using 3D, density-based, implicit, SST k-omega turbulence model. The preliminary results show a wide variety of flow features resulting from the interactions between the injector flows, shock waves, boundary layers, and cavity flows. In all the cases the C2H6-CO2-H2O fuel is injected at three different jet angles for the optimization of the jet orientation. Through the 3D numerical simulation we have corroborated that an optimized cavity is a good choice to stabilize the flame in the scramjet combustor as it generates a benign recirculation zone in the scramjet combustor. We comprehended that the cavity based scramjet combustors have a bearing on the source of disturbance for the transverse jet oscillation, fuel/air mixing enhancement, and flame-holding improvement. We concluded that the cavity shaped combustor with backward facing step and 45° forward ramp having an injector location of 1.6 times of its hydraulic diameter from the inlet facilitating at an angle of injection of 45° opposing the inlet flow is a good choice to getting relatively higher temperature at the exit
Sanal Kaytarmanın Öncülleri , Sonuçları ve Kontrolü Üzerine Bir Derleme
No full textSon yıllarda teknolojik gelişmelerle birlikte internet kişisel yaşamın ve iş yaşamının vazgeçilmezbir parçası olmuştur. Buna göre akademisyenler sanal kaytarmayı işyerindekisapkın davranışlardan biri olarak tanıtmış ve sanal kaytarmayı çalışma saatleri içerisindeçalışanların interneti işle ilgili olmayan amaçlar için kullanması olarak tanımlamıştır. Sanalkaytarma faaliyetleri arasında kişisel e-postaları kontrol etme, işle ilgili olmayan web sitelerini ziyaretetme, internet alışverişi, online oyun ve kumar oynama ve yasal olmayan müzik indirme sayılabilir.Sanal kaytarma kişilerin iyi oluş hali için olumlu etkilere sahip olsa da pek çok araştırma örgütleriçin verimliliğin düşmesi gibi olumsuz sonuçlara sebep olduğunu göstermiştir. Bu yazı sanal kaytarmaylailgili pek çok çalışmanın bir derlemesidir. Özellikle sanal kaytarmanın öncüllerini ve bireyselve örgütsel sonuçlarını ortaya koymaktadır. Buna ek olarak örgütlerde sanal kaytarmanın kontrolüamaçlı çeşitli yollar önermektedir. Dolayısıyla bu derleme ilgili alanda çalışan araştırmacılara veuygulayıcılara önemli bir kaynak olacaktır
Dual-head Electromagnetic Variable Sweeping Speed Space Broom for Space Debris Mitigation
No full textThe conceptual design of a dual-head electromagnetic variable speed propulsion system for sweeping the space debris using a space broom with inverted pendulum mechanism is described. The design demonstrates its capability for producing continuously the reciprocating moment of a magnetic piston using a Polarity Changer Timing Circuit (PCTC). The space broom is connected to the magnetic piston through a pivot point, with bearing and angular potentiometer, using cart and pole swing-up mechanism. The sweeping speed of the space broom can be altered, according to the mission requirements, by altering the reciprocating speed of the magnetic piston by varying the pole strengths of the magnetic heads and the timing of the PCTC. We observed that the dual-head electromagnetic variable speed propulsion system can offer various other applications for devising the sub-systems for space exploration probes, planet impact spinning probe, space stations and satellites. The uniqueness of this system comes from the fact that at the propelling conditions the system can be effectively integrated with a connecting rod and a crank shaft for getting rotary motion for various systems and subsystems applications while sweeping the broom continuously for space debris mitigation. We concluded that the design optimization of a dual-head electromagnetic variable sweeping speed space broom is a meaningful objective for space debris mitigation lucratively
V R SANAL KUMAR's Quick Files
No full textThe Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity
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