Pharmaceuticals. Although it is a drug, but the raw materials and intermediates used are organic items. For example, solvents such as toluene, benzene and alkanes.
Long-term in the evaporation concentration of large, volatile solvent atmosphere, and often in contact with respiratory need to take special measures to operate the intermediates, the human body is more harmful. For example, skin burns, chronic cancer, severe can lead to shock, system disorders, a variety of poisoning, offspring deformities.
Strictly speaking, any substance has toxicity, ancient medicine is medicine three poisons, modern science water is also toxic, look at the self-protection consciousness of each person and speak.
This is a very important part of the process.
How much harm does xenophagia do to the human body
Xenophagia, which refers to the persistent ingestion of non-nutritive substances not consumed by the general public, is most commonly seen in childhood psychiatric disorders, mental retardation, and schizophrenia. Its clinical manifestations include the following:
1. The symptoms of xenophagia are most common in children aged 1-6 years, with a higher prevalence in boys.
2. Frequent and repeated swallowing of non-nutritive substances, such as paint, mortar, tape, hair, clothes and so on. Older children even swallow clay, feces, stones, paper.
3. Swallowing foreign bodies can often lead to different complications, such as swallowing foreign bodies, leading to intestinal parasitosis, swallowing hair, stones lead to intestinal obstruction.
4. Heterophagia gradually disappears with age, and rarely persists into adulthood.
5. Symptoms occur in some patients and are associated with vitamin or mineral deficiencies.
How harmful is it to do cementThe main occupational hazard in cement production is dust, crushing, grinding, sieving, batching, kiln, packaging and other processes have a lot of dust. Usually, the free silica content of raw materials about 10%, clinker containing 1.7-9.0%, finished cement containing 1.2-2.6%. Long-term inhalation of raw material dust can cause silicosis, inhalation of clinker or cement dust after firing can cause cement pneumoconiosis. Cement meets water or sweat, can generate calcium hydroxide and other alkaline substances, *** skin caused by dermatitis, into the eye caused by conjunctivitis, keratitis. Raw material drying, vertical kiln calcination (145 ℃) and other operational zones, there are high temperature, heat radiation.
How harmful is X-RAY to the human body□ Correspondent Mountain Man intern Bei Bei Reporter Yiyu Recently, Guangzhou, Shenzhen, radiation protection experts at the same time called for children's annual physical examination, chest X-ray a should be called off as soon as possible. From this, has been quite mysterious radioactive examination instantly become the focus of attention. Many readers have called and written to this reporter to ask: X-rays are harmful to the human body? X-rays will cause cancer after a few times? In response to these questions, the reporter interviewed Associate Professor Guo Liang, director of the Department of Imaging Medicine of the First Affiliated Hospital of SUU. The staff of the "X-ray storage device" just into the SUU hospital imaging building, the reporter found that the staff here chest are attached to a "small tube". It turns out that this small tube is called "radiation measurement tube", is specifically used to measure the amount of X-rays ingested by professional staff every day, it will be taken down every once in a while, to measure whether the X-ray dose ingested by the staff is excessive. Director Guo told the reporter that the results are usually within the normal range. Professionals like him who have been working for many years are "qualified" for every measurement. Guo Liang said that in modern medicine, X-rays can be said to be prevalent, showing its importance everywhere. Like CT, nuclear magnetic **** vibration, interventional radiology and other people are no stranger to the radioactive examination, constantly used in clinical medicine, greatly improving the diagnosis of diseases. They are responsible for the work every day is through the X-rays this pair of penetrating "eyes" to check the patient's body of various abnormalities. A film is equal to watch an hour of television When the reporter asked with doubt, frequent acceptance of medical X-ray examination will increase the possibility of cancer, Guo Liang first listed such a set of data. He said, a filming of the body's X-ray dose ingested by the equivalent of watching an hour of television ingested; and chest X-ray dose equivalent to 1.5 times the filming; if you want to talk about the harm that is to do a chest X-ray damage is equal to smoking 3 cigarettes. If it is said that receiving medical X-rays is prone to cancer, then aren't medical professionals like them who have been working for years and years surrounded by such equipment and technology the first victims? The values obtained from the "radiometric tubes" that they wear every day at work are generally within the normal range. This means that the claim that "a few X-rays can cause cancer" lacks scientific basis and cannot be substantiated. CT once a week will not affect your health As we all know, X-rays have a certain killing and destroying effect on biological cells, and excessive exposure to X-rays will affect physiological functions, cause chromosomal abnormalities, and lead to the occurrence of cancer. However, a moderate amount of exposure will not affect human health. The dose of X-rays used by medical personnel for examination is very small and is limited to a safe dose. In particular, an occasional chest X-ray, a gastrointestinal examination, a bone X-ray or an angiogram will not cause adverse reactions. Moreover, the X-ray dose used for filming is not completely absorbed by human beings, most of it is penetrated from the human body, and only a very small part of it is absorbed by the human body, if we want to say a specific value, that is, what is really absorbed by the human body is only a few ten-thousandths of the dose used, or even less than that. And now, such as the First Affiliated Hospital of SUU and other major hospitals in Suzhou, the use of radiological examination equipment has been replaced by digital film (CR) and direct digital imaging (DR), the amount of radiation than the original and reduced a lot, accounting for only 1/7 of the original. So exactly, the normal human body to do a CT once a week is absolutely not affect the health of the. Director Guo emphasized that the medical X-rays to people check and treatment, never affect the health of people, so the public do not have to have any concerns.
Please adopt, thank you!
How harmful are fake eggs?
Fake eggs are best not consumed, the most harmful body Oh. I hope my answer you can be satisfied, thank you
Slimming cream on the human body how much harm
Problem analysis: you said that the composition of the slimming cream is not known, there may be a long body to have a certain effect, so do not recommend that you paragraph to use, and these slimming cream has no weight loss, because there is no way to help you consume the human body inside the fat advice: If you want to carry out a If you want to lose weight, you should pay attention to proper control of your diet, do not eat high-calorie food, pay attention to do some sports, every day to insist, your weight loss will be successful. Refer to it
Camera flash on the human body how much harmMainly on the eyes of the ***, the subject should not look at the flash, the general use of the flash will not cause blindness, but children should pay special attention.
How much does hepatitis B affect the human body? Can I work in the pharmaceutical industry?Hepatitis B is an infectious disease caused by the Hepatitis B virus (HBV) attacking the liver. Hepatitis B virus invades the liver cells and causes changes in the surface of the liver cells, causing the immune system to attack and destroy the liver. More than 90% of adults who are acutely infected with the hepatitis B virus are able to clear the virus through the body's immune system, thus achieving self-healing. Unfortunately, however, the majority of hepatitis B carriers in China were acquired by vertical transmission from mother to child, and a significant portion of the infected patients are chronic, meaning that the vast majority of hepatitis B carriers in China are chronic hepatitis B carriers. Without treatment, the virus in these patients generally cannot be cleared.
Hepatitis B itself is not scary, what is scary is the consequences of this disease: a portion of chronic hepatitis B patients are in danger of cirrhosis and liver cancer. Whether in the active stage of hepatitis or the liver disease is in the stationary stage, liver cells may be different degrees of inflammation, constantly being destroyed, and in the active hepatitis is even more destruction. Over time, the injured liver develops many scars, known as hepatic fibrosis, which eventually progresses to cirrhosis. After cirrhosis occurs, liver function will be seriously impaired, liver function failure will occur, and complications such as ascites, upper gastrointestinal bleeding, and encephalopathy will occur. The greatest danger is liver cancer, which occurs in 2% of patients with chronic hepatitis B cirrhosis every year. Even if the liver damage is not obvious hepatitis B virus carriers, there is still a risk of liver cancer, especially those who have been carrying the virus for more than 20 years.
Hepatitis B treatment to keep a clear head
Many people with hepatitis B understand the harm and serious consequences of hepatitis B, the first reaction is often to cure hepatitis B no matter what. Hepatitis B treatment should be determined, but also need to keep a clear head, can not follow the hepatitis B medical, drug advertisements. According to the current global progress of hepatitis B treatment, there is no drug that can cure hepatitis B by removing the hepatitis B virus in a short period of time. Hepatitis B antiviral treatment is a long-term and complex process, hepatitis B patients in the selection of drugs must be to the regular hospital hepatitis specialists to consult a doctor, follow the doctor's guidance, accept the standardized treatment, really do not receive the most reasonable treatment, but also to avoid taking shoddy drugs. Antiviral treatment should also choose the timing of treatment, the current global treatment experience confirms that only in the active period of hepatitis B to start antiviral treatment is most conducive to the clearance of the virus. Therefore, patients with hepatitis B should follow up liver function diligently, even in the stable period of liver function, we should strive to carry out liver function tests every six months and ultrasound once a year. Once found changes in the condition of early treatment.
Hepatitis B is difficult to treat but not difficult to prevent. If we all take good care of the prevention of this pass, hepatitis B is not terrible, the prevention of hepatitis B include:
1, the widespread implementation of hepatitis B vaccination;
2, maintain a positive state of mind and optimistic mood, determined to overcome the disease of the confidence;
3, understanding and mastering of some of the prevention and treatment of hepatitis B disease knowledge, and to develop and adhere to a good, scientific life rules;
At present, doctors around the world are working hard to control hepatitis B and have made great progress. Hepatitis B patients should not be pessimistic and lose confidence, nor should they do what they want and let it happen. As long as you pay attention to health care, closely follow the condition, accept the regular treatment, hepatitis B patients can still work and live as normal people
How harmful are electromagnetic waves in the air to the human body?The harm of electromagnetic wave on the human body
Electromagnetic wave radiation energy is low, will not make the material free phenomenon, and will not directly damage the environment material, but in the modern life everywhere full of electronic communication equipment, electromagnetic interference characteristics can not be taken lightly, because it is always possible to make people face the danger of the situation. Electromagnetic harm after long time use of computer, will feel body fatigue, eye fatigue, shoulder pain, headache, want to sleep, restlessness, these are affected by the electromagnetic wave. Electromagnetic waves can also reduce the immune function, reduce calcium in the human body, and lead to abnormal birth, miscarriage, visual impairment, impede cell division such as cancer, leukemia, brain tumors ... etc. In addition, electromagnetic waves emit a kind of positive ions that disturb the human body.
The experimental research and survey results show that electromagnetic radiation on health hazards are multi-faceted, complex, the main hazards are as follows:
1. Harm to the central nervous system
The nervous system is very sensitive to the role of electromagnetic radiation, by its low intensity repeated action, the central nervous system function changes, the emergence of neurasthenia syndrome, the main manifestations of headache, dizziness, brain tumors. Performance has a headache, dizziness, weakness, memory loss, sleep disorders (insomnia, dreamy or sleepy), daytime dozing, agitation, excessive sweating, palpitations, chest tightness, hair loss, etc., especially sleep difficulties, weakness, sweating and memory loss is more prominent. All these indicate that the brain is dominated by inhibitory processes. Therefore, in addition to the above syndromes, the victim also shows short-term memory loss, visual-motor response time value is prolonged; poor hand-cerebral coordination, the performance of the number of scratching speed is slowed down, and there are more errors.
2. Harm to the body's immune function
The body's resistance to decline. Animal experiments and studies and surveys on the effects of radiation on the population show that the human body's white blood cells phagocytosis of bacteria and the number of phagocytosis of bacteria are reduced. In addition, the long-term effects of electromagnetic radiation, the formation of antibodies is significantly inhibited.
3. Effects on the cardiovascular system
People affected by electromagnetic radiation, hemodynamic disorders often occur, vascular permeability and tension decreased. Because of the effect on the vegetative nervous system, people tend to show symptoms of bradycardia, and a few show tachycardia. Victims show fluctuation of blood pressure, which starts to rise, then returns to normal, and finally becomes low; the electrocardiogram shows a voltage drop of R T wave, which is an allergic reaction of the vagus nerve and a result of myocardial trophic disorder; the prolongation of the P?Q interval, and the widening of the P wave, which indicates that the atrioventricular conduction is not working well. In addition, long-term exposure to electromagnetic radiation, the cardiovascular system of the disease, will be earlier and easier to promote its occurrence and development.
4. Effects on the blood system
Under the action of electromagnetic radiation, the peripheral blood image can appear white blood cell instability, mainly downward tendency, white blood cell reduction. Erythrocyte production is inhibited, the appearance of reticulated erythrocyte reduction. The results of health surveys of people who operate radar show that most of them show a decrease in white blood cells. In addition, when radio waves and radiation act on the human body at the same time, the role of the blood system than a single factor can produce more significant damage.
5. Reproductive system and genetic effects
Long-term exposure to UHF generators can be seen in men with decreased sexual function, impotence; women with menstrual cycle disorders. Due to poor blood circulation in the testes, very sensitive to electromagnetic radiation, *** generation is inhibited and affect fertility; so that the egg cell degeneration, destroying the process of ovulation, and the loss of female fertility.
High-intensity electromagnetic radiation can produce genetic effects, so that testicular chromosomal aberrations and mitotic abnormalities. Women who have received short-wave diathermy at an early stage or before pregnancy have had congenital birth defects (malformed babies) in their offspring.
6. Effects on the visual system
The eye tissue contains a large amount of water, easy to absorb electromagnetic radiation power, and the eye's blood flow is small, so in the role of electromagnetic radiation, the temperature of the eyeballs is easy to rise. Elevated temperature is caused by the main conditions of cataracts, rising temperatures lead to rose eye lens protein coagulation, most scholars believe that lower intensity microwave long-term effect, can accelerate the aging of the lens and turbidity, and may make the colored field of vision narrowing and dark adaptation time is prolonged, resulting in some visual impairment. In addition, the role of long-term low-intensity electromagnetic radiation can contribute to visual fatigue, eye discomfort and eye dryness and other phenomena
7. Electromagnetic radiation carcinogenic and cancer-causing effects
Most of the experimental animals by the role of microwaves can make the incidence of cancer increased. Some microwave biologist's experiments show that electromagnetic radiation will promote the body's (genetic), particulate cell chromosomes mutations and mitotic abnormalities, so that certain tissues appear pathological proliferation process, so that normal cells into cancer cells. U.S. embassy personnel abroad for a long time by the microwave eavesdropping emitted by a high degree of electromagnetic radiation, caused by the embassy personnel, white blood cell count rise, cancer incidence rate is higher than normal people. Another example is the area under the influence of high-power long-distance microwave radar, after investigation, the local cancer patients increased sharply. Microwave thermogenic effect on human tissues, not only can be used for physical therapy, can also be used to treat cancer, so that the center of the cancerous tissue temperature rises, and destroy the proliferation of cancer cells.
In addition to the above health hazards of electromagnetic radiation, it is also on the endocrine system, hearing, material metabolism, morphological changes in tissues and organs, can have adverse effects.
How harmful is rubber vulcanizationRubber is generally non-toxic, many vulcanizing agents, accelerators, antioxidants, etc. is also non-toxic, but in the high-temperature vulcanization production process will produce pungent odors, such as hydrogen sulfide, sulfur dioxide, and so on the other, it smells uncomfortable, and prolonged exposure to respiratory tract will have a certain degree of harm.
Pay attention to wear a mask, preferably one with an activated carbon filter.
Usually at home, it is recommended to eat more lung food, such as vegetables, pig's blood, etc., or as far as possible in the rubber odor thin place activities, a slight odor on the human body almost no effect.