The European Union and the Alternative Sources of Energy

The paper presents a detailed analysis of the alternative sources of energy and aspects related to the efficient use of these sources.Energy; Alternative sources of energy; Renewable energy.

Efficient uses of some types of surfactant products

The present work is part of a more complex study referring to chemical substances known under the name of „surfactants” or „tensioactive agents” which can alter the conductivity of fibers, textile materials, etc. in order to diminish some negative physiological effects on the human body. The use of raw materials, indigenous or imported, refers to the strategy adopted by each firm, concerning their own technology, which should include both organization and management of production processes, and ways of introducing the technical progress with economic efficiency.surfactant, textile industry, latex, deformer, isoelectric point, technical progress

Bucharest and Environment Protection

In the current document we are referring to the existing data concerning the impact that benzene - which is one of the most important components of different types of fuels - has on Bucharest and on its inhabitants. We are also trying to present possible solutions to this serious problem which is affecting our lives. We have to take into account that the level of pollution is directly related with cancer mortality. And one of the most common causes for cancer, especially for professional cancers, is benzene – the most important aromatic hydrocarbons.environment protection, pollution, industrial ecology

The Impact of some Fuels on the Environment

The present study wishes to bring to the attention of the reader the alarming impact that the common benzene molecule has on the environment, with unimaginable implications on the human being. Although it has a great economic importance, being used in many industries, specialists are underlining the fact that benzene is extremely toxic, even in small quantities. In this document there are mentioned, under the form of case studies, the risks that those working in the presence of benzene fumes have to face.benzene fumes, air pollution, environmental effects

Aplicación de los drones en los procesos de inspección y gestión de la seguridad en buques

Este proyecto pretende realizar una propuesta sobre el desarrollo de un sistema aéreo no tripulado que pueda utilizarse como acompañante de los oficiales en un buque en las actividades más peligrosas a bordo. se realiza un estudio de las actividades que actualmente realizan los drones y la normativa que se aplica y, después de analizar las condiciones peligrosas a las que un oficial está expuesto en un buque, se propone la carga útil que debe llevar un dron para realizar trabajos de corto alcance con el objetivo de no exponer a la persona responsable a situaciones peligrosas. también se realiza una propuesta general un sistema de procesamiento de datos que permita utilizarlos posteriormente en un cuadro de mandos que mande mensajes de alerta a un dispositivo en caso de peligro. finalmente, después de la consulta a varios expertos en el sector naval y de los estudios realizados, se ha llegado a la conclusión de que un dron como acompañante de un oficial a bordo de un buque es una opción todavía a estudiar que puede aportar seguridad y beneficios al sector

OSMOLARITY AND APOPTOSIS IN IVF BOVINE EMBRYOS

The aim of this research was to establish the optimal conditions for culture of bovine embryos obtained in vitro and the effects of osmolarity on development and apoptosis. The embryos obtained by in vitro fertilization (IVF) procedure were divided into two different groups. The embryos from the control group were cultured for 7 days in B2-Menezo. The embryos from the experimental group were cultured in medium with NaCl, having variation of concentration and osmolarity. Results showed that there are differences in development stage and apoptosis. Increasing the concentration from 90 to 120mM NaCl generated decreasing of the blastocyst stage (P<0.05), and also the apoptosis was increased in the blastocyst stage. The optimum concentration of NaCl was 90mM and the optimum osmolarity of the medium was between 260-280 mOsmol for the studied IVF bovine embryos, affecting positively the embryos development

Concentration of cortisol, insulin-like growth factor-I and immunoglobulin G class in blood of neonatal calves of different body mass at birth

The objective of this work was to examine whether concentrations of cortisol, insulin-like growth factor-I (IGF-I) and immunoglobulin G class (IgG), in fact blood parameters which are believed to be of extreme importance in the postnatal survival of calves, are dependant on the body mass of calves at birth. Investigations were performed on 12 newborn calves of the Holstein-Friesian breed, placed into two groups on the grounds of their body mass at birth. The first group (n=6) comprised calves whose body mass was more than 35 kg at birth (41.67±3.08 kg), while the second group (n=6) comprised calves whose body mass at birth was less than 35 kg (32.00±3.58 kg). Blood samples were taken immediately preceding the consuming of colostrum, as well as at 32 hours of neonatal life. Cortisol and IGF-I concentrations were determined in blood serum samples taken immediately before colostrum consumption, while IgG concentration was determined in the samples taken 32 hours after the birth of the calves. The cortisol concentration in calves born with a greater body mass (61.51±32.78 nmol/l) was lower (p=0.052) than in calves born with a smaller body mass (94.89±17.74 nmol/l). A significant negative correlation (r= -0.592; p<0.05) was established between the body mass of calves at birth and the cortisol concentration. The IGF-I concentration determined immediately following birth in calves with a greater boy mass at birth (10.17±1.71 nmol/l) was statistically significantly higher (p<0.05) in comparison with calves born with a smaller body mass (7.04±1.15 nmol/l). There was a significant positive correlation (r = 0.519; p<0.10) between the body mass of calves at birth and the IGF-I concentration. Thirty-two hours following birth, the IgG concentration in blood serum of calves born with a bigger body mass (18.72±1.99 g/l) was significantly higher (p<0.05) than in calves born with a smaller body mass (11.68±4.79 g/l). A significant positive correlation was established between the body mass of calves at birth and the IgG concentration determined at 32 hours of neonatal life (r = 0.620; p<0.05). The obtained results point to the conclusion that calves of body mass over 35 kg at birth are better adapted to the conditions of the outer environment in comparison with calves born with a body mass of less than 35 kg.

Nigella sativa - a Plant with Personality in Biochemistry and Experimental Medicine Researches

Last decades often presented references to traditional medicine, or culinary use of natural resources for a better health status, prevention or treatment of different diseases. One of the natural plants came lately in the researches as a miracle salve: Nigella sativa. Also commonly known as black cumin, the most use of this plant are the seeds, such as, as powder, as oil extract, or as hydro or alcoholic extracts. Culinary usage of N. sativa is referring to the seeds used as spice. Medical usage of this plantis mostly used as oil or extracts administrated orally or intraperitoneal. The best demonstrated bioactive component is thymoquinone, an alkaloid, monotherpenoid compound, that seems to be the key of medical benefits of N. sativa. Experimental medicine proved that seeds of black cumin have health enhancement and pharmaceutical effects, being used in various disseases (cardiac, digestive and respiratory diseases; hepatic and renal tonic; inflammations; reproductive and neural disorders, analgesic; appetite stimulant; cancer prevention and treatment; spasmolytic and diabetes. Seeds (as powder, oil or hydro, alcoholic extracts) have been demonstrated that have antimicrobial, antiparasitic, antitumoral, antidiabetic, antioxidant, and anti-inflammatory action. N. sativa is easy to cultivate, storing, and offering diver potential of use as seed, seed oil, different type of seed extracts

Rabbits in vivo experiments and hematological evaluation after iron toxicity

Iron is essential elements for human, animals and plant organism. The depletion of organism in iron leads to modification in the concentration of hemoglobin which is responsible for oxygen transportation. Also, overload of iron represents a possible intoxication that can affect negatively the liver tissue and then all cells. Our experiments was conducted on two groups (control and experimental) of rabbits – German Lop Eared Rabbits breed, and we administrated ferrous gluconate (10mg/kg body weight) to the experimental group, two times. Also, during the experiment the rabbits had a special diet with plants from garden administrated fresh. The plants have very good antioxidant properties, and can prevent the iron intoxication and also participate intense to detoxification of the liver after iron overload. Hematological analysis were preformed for red blood cells, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, red cell distribution width, platelet and leukocyte evaluation. The results demonstrated a very good protective action of the diet plants, meaning that the hematological parameters were not out of normal range after iron overload