Fakultas Teknik

New neurons are generated in the adult hippocampus of many species including rodents, monkeys, and humans. Conditions associated with major depression, such as social stress, suppress hippocampal neurogenesis in rodents and primates. In contrast, all classes of antidepressants stimulate neuronal generation, and the behavioral effects of these medications are abolished when neurogenesis is blocked. These findings generated the

An interdigitated cathode flow field has been tested in situ with neutron radiography to measure the water transport through the porous gas diffusion layer in a PEM fuel cell. Constant current density to open circuit cycles were tested and the resulting liquid water accumulation and dissipation rates with in-plane water distributions are correlated to measured pressure differential between inlet and outlet gas streams. The effect of varying the reactant gas relative humidity on liquid water accumulation is also demonstrated. These results provide evidence that the reactant gas establishes a consistent in-plane transport path through the diffusion layer, leaving stagnant regions where liquid water accumulates. A simplified permeability model is presented and used to correlate the relative permeability to varying gas diffusion layer liquid water saturation levels.

This paper explores the method of neutron imaging as an experimental tool to perform in situ non-destructive analysis on an operating polymer electrolyte membrane hydrogen fuel cell. Neutrons are ideal for the imaging of hydrogen fuel cells because of their sensitivity to hydrogen-containing compounds such as water. This research focused on using imaging techniques to develop methods for testing and evaluating the water management system of a fuel cell. A real-time radiography dataset consisting of 1000 images at 2-s intervals was used to create a movie which showed water production, transport, and removal throughout the cell. This dataset was also analyzed to quantify and calculate the amount of water present in the cell at any time and masking techniques were used to differentiate between water in the cell flow channels and in the gas diffusion layer. Additionally, a tomography dataset allowed for the creation of a digital 3-dimensional (3-D) reconstruction of the dry cell which can be analyzed for structural defects.

An interdigitated cathode flow field has been tested in situ with neutron radiography to measure the water transport through the porous gas diffusion layer in a PEM fuel cell. Constant current density to open circuit cycles were tested and the resulting liquid water accumulation and dissipation rates with in-plane water distributions are correlated to measured pressure differential between inlet and outlet gas streams. The effect of varying the reactant gas relative humidity on liquid water accumulation is also demonstrated. These results provide evidence that the reactant gas establishes a consistent in-plane transport path through the diffusion layer, leaving stagnant regions where liquid water accumulates. A simplified permeability model is presented and used to correlate the relative permeability to varying gas diffusion layer liquid water saturation levels.

Kompetensi Dasar merupakan sejumlah kemampuan minimal yang harus dimiliki peserta didik dalam rangka menguasai SK mata pelajaran tertentu. Kompetensi Dasar dipilih dari yang tercantum dalam Standar Isi. Sebelum menentukan atau memilih Kompetensi Dasar, penyusun terlebih dahulu mengkaji standar kompetensi dan kompetensi dasar mata pelajaran dengan memperhatikan hal-hal sebagai berikut : a. Urutan berdasarkan hierarki konsep disiplin ilmu dan/atau tingkat kesulitan Kompetensi Dasar b.

Petir adalah salah satu kejadian alam yang sangat indah. Petir juga merupakan fenomena alam akan ancaman kematian bagi manusia. Dengan temperatur sambaran melebihi panas permukaan matahari dan kekuatan benturan yang menyebar ke segala arah, petir merupakan pelajaran kejadian fisik ilmiah.

Praktek Kerja Lapangan (PKL) merupakan sarana yang paling tepat bagi para siswa untuk mengetahui dan mempraktekkan secara langsung bagaimana proses produksi yang sedang berlangsung di sebuah industri dan juga sebagai tahapan awal untuk beradaptasi sebelum nantinya para siswa bekerja setelah keluar dari sekolah.

Management information system (MIS) of Engineering Faculty (EF) Internship Office (IO) Universitas Negeri Semarang (UNNES) 2018 is an efficient and effective information system in colleges. The purpose of this study is the learning outcomes of MIS IO EF UNNES 2018 through users and systems. This research method was conducted using a questionnaire with HOT (Human, Organization, and Technology) fit model. This questionnaire was filled by 64 respondents consisting of students, supervisors, study program coordinator, administrative both departments and faculties. The results show that the user's response to human instruments was a good average (54%) but the assessment of the department and faculty administration by all respondents was only 3% and 1.5%. Meanwhile, the average organizational instrument was good (53.86%), but the climate factor or organizational culture (55.40%) was the best from the organizational existence (55.01%) and the quality of organizational work (50.22%). Fin...