javad vahedi

In this work, using the transfer matrix method and considering the Rashba spin-orbit interaction in the ZnSe/ZnMnSe/ZnSe/ZnMnSe/ZnSe heterostructures, the thickness effects of ZnMnSe and ZnSe layers on spin current density and shot noise is investigated. Results show that ZnMnSe thickness has a crucial role in spin polarization, in which spin current and shot noise for a spin up shows increasing with oscillation behavior while for a spin down shows a monotonically decreasing trend. Moreover, the effect of Rashba on spin up and spin down is to increase and decrease the height potential, respectively, which consequently causes to decrease and increase of spin current and shot noise in spin up and down, respectively.

In this paper, we numerically investigate the thermoelectric properties of a triangle quantum dot connected to metallic electrodes using Green's function method in the Anderson model. Using the equation of motion method in the presence of Coulomb interaction in the Coulomb-blockade regime, the thermovoltage, thermocurrent and heat dissipation are calculated. Results show that the thermovoltage and thermocurrent have nonlinear behavior and their magnitude and sign of them can be controlled with the site energy and coupling strength of quantum dots. Also, the heat current is nonlinear and has an asymmetrical function with respect to the sign of bias voltage for all of the site energies of quantum dots. Results show that the heat current can be positive or negative for all of the site energies and it shows that heat current has a nontrivial zero for the nonzero voltages. These results can be useful to determine the performance of the nanoscale electronic devices to control heat dissipations.

Human genome project in its general sense is a genetic project that with the genetic engineering of a human provides the possibility of any change in the human race, including genetic repair or improvement and even the production of a new human without the need for a father sperm. he does. Since the date of the beginning of genetic studies is not long, the issue of simulation is in the realm of emerging affairs. Ethical considerations actually address the moral barriers that may arise from the human genome. Therefore, the present study seeks to address these ethical points.

Descriptive-analytical method has been used to investigate the present issue, which is considered as a qualitative method. The present method examines the issue of human genome change by collecting information from texts and documentary sources in the field of ethics and medicine.

Human simulation needs to consider many ethical considerations from various aspects, including: lack of technical and medical security; Weakening of the family institution and violation of the principle of human dignity and damage to human lineage; Lack of personal identity and full psychological development; Creating a racist approach and creating a superior race; It includes the violation of human creation and the manipulation of God's work.

The rules and regulations related to simulation in Iranian law are ambiguous and have various dimensions that cannot provide strong legal support to support simulation. The only cases that can be seen are the rules related to inheritance of transportation, wills for transportation and acknowledgment in favor of transportation, from which results are extracted in the field of simulation. Therefore, from a legal point of view, we need clear rules about the personality and identity of the fetus and the simulation process. Establishing rules to clarify the mechanisms for using simulation technology is essential.

In recent years, many advances have been made in the field of genetic engineering and medical sciences. The simulation process is one of the important examples of these developments. This issue has been considered by researchers and researchers from two perspectives: one is to use the simulation process to treat diseases and the other is to use this process to produce new humans. Some researchers in the field of ethics have raised challenges related to the various functions of simulation practice and have opposed them due to the existence of these challenges. Since the field of ethics is one of the most important principles in the field of law and jurisprudence, in the present study with a descriptive and analytical method, it will be observed that the simulation process for the treatment of diseases is not only in conflict or conflict with jurisprudential and moral principles, but also Has been confirmed and emphasized for its very important role in the treatment of diseases, but in connection with the function of the simulation process to produce a new human being, there are important moral and jurisprudential challenges that have caused many jurists to oppose this process. Correspondingly, in the field of criminal law, relying on the principles of innocence and resorting to narrow interpretation, basically the act of simulation with the purpose of treatment cannot be considered a crime until it is included in the explicit text.