Measurement of the in hole density of gassed explosives at peruvian mineRomel Villanueva
The document summarizes research on the variation of in-hole density of gassed explosives used in Peruvian mines and its effect on blasting results. Field measurements found that in-hole density increases with depth due to hydrostatic pressure, reaching critical values that can cause detonation issues. Maintaining cup density below 1.15 g/cm3 and limiting charge lengths mitigated these effects. Density was also found to increase over time, emphasizing the importance of controlling sleep times. Reducing in-hole densities improved explosive performance and fragmentation while also providing economic benefits.
NITRATO DE AMONIO DE ALTA DENSIDAD Y EMULSION GASIFICADA: MEZCLA EXPLOSIVA EN...Romel Villanueva
The document discusses improving blasting at Peruvian mines through the use of HDAN and gasified emulsion blends. A blend of 25% HDAN and 75% gasified emulsion (GE-HDAN) was found to increase energy delivery and sensitivity while maintaining water resistance. Field tests at three large Peruvian mines found the GE-HDAN blend achieved excellent detonation performance and velocities over 5700 m/s, greater than heavy ANFO. Use of the GE-HDAN blend provided economic benefits through reduced explosive consumption and costs for mine operators.
La pandemia de COVID-19 ha tenido un impacto significativo en la economía mundial y las vidas de las personas. Muchos países han impuesto medidas de confinamiento que han cerrado negocios y escuelas, y han pedido a la gente que se quede en casa tanto como sea posible para frenar la propagación del virus. A medida que los países comienzan a reabrir gradualmente, los expertos advierten que es probable que se produzcan nuevos brotes a menos que se encuentre una vacuna o un tratamiento efectivo.
Measurement of the in hole density of gassed explosives at peruvian mineRomel Villanueva
The document summarizes research on the variation of in-hole density of gassed explosives used in Peruvian mines and its effect on blasting results. Field measurements found that in-hole density increases with depth due to hydrostatic pressure, reaching critical values that can cause detonation issues. Maintaining cup density below 1.15 g/cm3 and limiting charge lengths mitigated these effects. Density was also found to increase over time, emphasizing the importance of controlling sleep times. Reducing in-hole densities improved explosive performance and fragmentation while also providing economic benefits.
NITRATO DE AMONIO DE ALTA DENSIDAD Y EMULSION GASIFICADA: MEZCLA EXPLOSIVA EN...Romel Villanueva
The document discusses improving blasting at Peruvian mines through the use of HDAN and gasified emulsion blends. A blend of 25% HDAN and 75% gasified emulsion (GE-HDAN) was found to increase energy delivery and sensitivity while maintaining water resistance. Field tests at three large Peruvian mines found the GE-HDAN blend achieved excellent detonation performance and velocities over 5700 m/s, greater than heavy ANFO. Use of the GE-HDAN blend provided economic benefits through reduced explosive consumption and costs for mine operators.
La pandemia de COVID-19 ha tenido un impacto significativo en la economía mundial y las vidas de las personas. Muchos países han impuesto medidas de confinamiento que han cerrado negocios y escuelas, y han pedido a la gente que se quede en casa tanto como sea posible para frenar la propagación del virus. A medida que los países comienzan a reabrir gradualmente, los expertos advierten que es probable que se produzcan nuevos brotes a menos que se encuentre una vacuna o un tratamiento efectivo.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already have a condition.
Este atlas constituye el tercer volumen de los Atlas de microfotografías de minerales y rocas. Está pensado para utilizarse como manual de laboratorio por los estudiantes de petrología metamórfica, así como obra de referencia para profesores y geólogos. El libro se divide en dos partes. La primera comprende la descripción de microfotografías diversas de las rocas metamórficas, agrupadas según su composición, situadas en condiciones metamórficas variadas. También incluye algunas variedades menos comunes cuando tienen un valor especial según sus condiciones de metamorfismo.La segunda parte está dedicada a las texturas características de las rocas metamórficas. Representa una introducción a los ejemplos más difundidos de las texturas de deformación y reacción, y aquellas texturas indicativas de la historia metamórfica y estructural de una roca.En ambas partes del libro se incluyen breves descripciones y resúmenes de los minerales y sus texturas que acompañan las excepcionales microfotografías a todo color. En pliego adjunto a la obra, los revisores incluyen 4 Apéndices que facilitan la utilización de la obra adaptada al contexto del profesional en sus aspectos más prácticos.
1st issue of Volume 9. A magazine in urdu language mainly based on spiritual treatment and learning. Many topics on ISLAM, SUFISM, SOCIAL PROBLEMS, SELF HELP, PSYCHOLOGY, HEALTH, SPIRITUAL TREATMENT etc. A Very useful magazine for everyone.
The document discusses the history and development of artificial intelligence over the past several decades. Early research focused on symbolic approaches using logic and rules to represent knowledge. More recently, machine learning techniques like deep learning have proven very successful in applications such as computer vision and natural language processing by learning from large amounts of data rather than being explicitly programmed. Current AI research aims to build systems that can interact naturally with humans and the physical world.
The document discusses the benefits of exercise for both physical and mental health. It notes that regular exercise can reduce the risk of diseases like heart disease and diabetes, improve mood, and reduce feelings of stress and anxiety. The document recommends that adults get at least 150 minutes of moderate exercise or 75 minutes of vigorous exercise per week to gain these benefits.
One person attempts to hang herself on the way to Washington. Rick holds Abraham, who thinks she's dead, at gunpoint and prevents him from shooting her in the head. Rick, Abraham, and Carl head to Rick's hometown to find weapons. They discover Morgan, whom Rick met when he woke up from his coma, and he joins Rick's survivors...
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise has also been shown to boost self-esteem and can serve as a healthy way to manage stress.
Subi estos Manuales del Curso de Inglés Sin Barreras
Cualquier cooperación que desee hacer, se los agradeceré.
Banco Estado 23962390676
mi mail es el s_alicia2008@hotmail.com
The document discusses the results of a study on the impact of climate change on global wheat production. Researchers found that rising temperatures will significantly reduce wheat yields across different regions of the world by the end of the century. Under a high emissions scenario, the study projects a global average decrease in wheat production of 6% by 2050, and a 17% decrease by 2100, threatening global food security.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness and well-being.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already have a condition.
Este atlas constituye el tercer volumen de los Atlas de microfotografías de minerales y rocas. Está pensado para utilizarse como manual de laboratorio por los estudiantes de petrología metamórfica, así como obra de referencia para profesores y geólogos. El libro se divide en dos partes. La primera comprende la descripción de microfotografías diversas de las rocas metamórficas, agrupadas según su composición, situadas en condiciones metamórficas variadas. También incluye algunas variedades menos comunes cuando tienen un valor especial según sus condiciones de metamorfismo.La segunda parte está dedicada a las texturas características de las rocas metamórficas. Representa una introducción a los ejemplos más difundidos de las texturas de deformación y reacción, y aquellas texturas indicativas de la historia metamórfica y estructural de una roca.En ambas partes del libro se incluyen breves descripciones y resúmenes de los minerales y sus texturas que acompañan las excepcionales microfotografías a todo color. En pliego adjunto a la obra, los revisores incluyen 4 Apéndices que facilitan la utilización de la obra adaptada al contexto del profesional en sus aspectos más prácticos.
1st issue of Volume 9. A magazine in urdu language mainly based on spiritual treatment and learning. Many topics on ISLAM, SUFISM, SOCIAL PROBLEMS, SELF HELP, PSYCHOLOGY, HEALTH, SPIRITUAL TREATMENT etc. A Very useful magazine for everyone.
The document discusses the history and development of artificial intelligence over the past several decades. Early research focused on symbolic approaches using logic and rules to represent knowledge. More recently, machine learning techniques like deep learning have proven very successful in applications such as computer vision and natural language processing by learning from large amounts of data rather than being explicitly programmed. Current AI research aims to build systems that can interact naturally with humans and the physical world.
The document discusses the benefits of exercise for both physical and mental health. It notes that regular exercise can reduce the risk of diseases like heart disease and diabetes, improve mood, and reduce feelings of stress and anxiety. The document recommends that adults get at least 150 minutes of moderate exercise or 75 minutes of vigorous exercise per week to gain these benefits.
One person attempts to hang herself on the way to Washington. Rick holds Abraham, who thinks she's dead, at gunpoint and prevents him from shooting her in the head. Rick, Abraham, and Carl head to Rick's hometown to find weapons. They discover Morgan, whom Rick met when he woke up from his coma, and he joins Rick's survivors...
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise has also been shown to boost self-esteem and can serve as a healthy way to manage stress.
Subi estos Manuales del Curso de Inglés Sin Barreras
Cualquier cooperación que desee hacer, se los agradeceré.
Banco Estado 23962390676
mi mail es el s_alicia2008@hotmail.com
The document discusses the results of a study on the impact of climate change on global wheat production. Researchers found that rising temperatures will significantly reduce wheat yields across different regions of the world by the end of the century. Under a high emissions scenario, the study projects a global average decrease in wheat production of 6% by 2050, and a 17% decrease by 2100, threatening global food security.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help boost feelings of calmness and well-being.
ESPERAMOS QUE ESTA INFOGRAFÍA SEA UNA HERRAMIENTA ÚTIL Y EDUCATIVA QUE INSPIRE A MÁS PERSONAS A ADENTRARSE EN EL APASIONANTE CAMPO DE LA INGENIERÍA CIVIŁ. ¡ACOMPAÑANOS EN ESTE VIAJE DE APRENDIZAJE Y DESCUBRIMIENTO
La energía radiante es una forma de energía que
se transmite en forma de ondas
electromagnéticas esta energía se propaga a
través del vacío y de ciertos medios materiales y
es fundamental en una variedad naturales y
tecnológicos
Equipo 4. Mezclado de Polímeros quimica de polimeros.pptxangiepalacios6170
Presentacion de mezclado de polimeros, de la materia de Quimica de Polímeros ultima unidad. Se describe la definición y los tipos de mezclado asi como los aditivos usados para mejorar las propiedades de las mezclas de polimeros