ENGINEERING GEOLOGY

Engineering geology is the application of the geologicalsciences to engineering study for the purpose of assuring that the geological factors regarding the location, design, construction, operation and maintenance of engineeringworks are recognized and accounted for….

 

Engineering Geology is an international interdisciplinary journal bridging the fields of the earth sciences and engineering, particularly geological and geotechnical engineering. The focus of the journal is on geological or engineering studies that are of interest to engineering geologists, whether their initial training is in geology or civil/mining engineering. The studies published in this journal must show relevance to engineering, environmental concerns, and safety.

Sample topics of interest include but are not limited to applied geomorphology and structural geology, applied geophysics and geochemistry, environmental geology and hydrogeology, land use planning, natural hazards, remote sensing techniques, soil and rock mechanics and applied geotechnical engineering.

Paper types considered are original research articles, case histories, and comprehensive reviews. Case studies, in particular, should emphasize why the paper is of interest to the international readership of this journal, and/or what new or novel research or theoretical methods are being presented.

The journal is intended for academic scientists, industry and applied researchers, and policy and decision makers.

Engineering Geology is the application of the science of geology to the understanding of geologic phenomena and the engineering solution of geologic hazards and other geologic problems for society.

HERE IS THE PDF FOR THE ENGINEERING GEOLOGY WHICH MAY HELP YOU 🙂 

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diode

A diode is a specialized electronic component with two electrodes called the anode and the cathode. Most diodes are made with semiconductor materials such as silicon, germanium, or selenium. Some diodes are comprised of metal electrodes in a chamber evacuated or filled with a pure elemental gas at low pressure. Diodes can be used as rectifiers, signal limiters, voltage regulators, switches, signal modulators, signal mixers, signal demodulators, and oscillators.

The fundamental property of a diode is its tendency to conduct electric current in only one direction. When the cathode is negatively charged relative to the anode at a voltage greater than a certain minimum called forward breakover, then current flows through the diode. If the cathode is positive with respect to the anode, is at the same voltage as the anode, or is negative by an amount less than the forward breakover voltage, then the diode does not conduct current. This is a simplistic view, but is true for diodes operating as rectifiers, switches, and limiters. The forward breakover voltage is approximately six tenths of a volt (0.6 V) for silicon devices, 0.3 V for germanium devices, and 1 V for selenium devices.

The above general rule notwithstanding, if the cathode voltage is positive relative to the anode voltage by a great enough amount, the diode will conduct current. The voltage required to produce this phenomenon, known as the avalanche voltage, varies greatly depending on the nature of the semiconductor material from which the device is fabricated. The avalanche voltage can range from a few volts up to several hundred volts.

When an analog signal passes through a diode operating at or near its forward breakover point, the signal waveform is distorted. This nonlinearity allows for modulation, demodulation, and signal mixing. In addition, signals are generated at harmonics, or integral multiples of the input frequency. Some diodes also have a characteristic that is imprecisely termed negative resistance. Diodes of this type, with the application of a voltage at the correct level and the polarity, generate analog signals at microwave radio frequencies.

Semiconductor diodes can be designed to produce direct current (DC) when visible light, infrared transmission (IR), or ultraviolet (UV) energy strikes them. These diodes are known as photovoltaic cells and are the basis for solar electric energy systems and photosensors. Yet another form of diode, commonly used in electronic and computer equipment, emits visible light or IR energy when current passes through it. Such a device is the familiar light-emitting diode (LED).diode

ENGINEERING PHYSICS SOLUTION

Engineering physics or Engineering Science refers to the study of the combined disciplines of physics, mathematics and combined with engineering studies in computer, electrical, materials or mechanical engineering.

Engineering physics or Engineering Science refers to the study of the combined disciplines of physics, mathematics and combined with engineering studies in computer, electrical, materials or mechanical engineering. By focusing on the scientific method as a rigorous basis, it seeks ways to apply and develop new solutions in engineering. Engineering physics or engineering science degrees are respected academic degrees awarded in many countries. It can be taught at the undergraduate level and is often designed as an honors program at some universities due to the rigorous nature of the academic curriculum which covers a wide spectrum of scientific disciplines

HERE IS THE PDF SOLUTION ON ENGNEERING PHYSICS

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hope it wil help you for your studies 🙂