Grunnen til at hydraulikk sylindre er sterkere i en retning og raskere i motsatt.
Pluss og minus retning
Når stempelstangen beveger seg utover sier vi sylinderen beveger seg i "pluss" retning, mens andre vei blir "minus" retning.
En sylinder er alltid sterkest i pluss retning …
Grunnen til at den er sterkere i pluss retning er fordi stempelet på denne siden har større areal trykket får virke på. 
På minus siden av stempelet vil arealet av stempelstangen virke i begge retninger, og ikke gi noen effekt. Dette arealet må derfor trekkes bort når en regner på kraft i minus retning.
… men den er raskere i minus retning.
Grunnen til dette er at når sylinderen kjører i minus retning fylles den gradvis med olje og metall. På grunn av metallet fra stempelstangen er det mindre plass til olje, og en trenger derfor et mindre oljevolum for å kjøre sylinderen helt tilbake. Pumpen gir den samme volumstrømmen, uansett retning, så derfor blir hastigheten i minus retning høyere enn i pluss retning.
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Eksempel på kraft
Hvis vi har 200 bar (200 kg pr kvadratcentimeter) trykk i anlegget vi vi kunne løfte 6000 kg i pluss retning men bare 4000 kg i minus retning.
Eksempel på hastighet
Hvis pumpen gi 10 l/min tar det 18 sek å kjøre full pluss retning, men det bare tar 12 sek å kjøre full minus retning.
Du lærer mer om sylindre i kurset, men emnet over får jeg ofte spørsmål om.
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The men’s prostate is central to the section of a male’s reproductive :. It secretes fluids that help the transportation and activation of sperm. The prostate gland can be found just in front of the rectum, below the bladder and around the urethra. When there is prostate problem, it is almost always really miserable and inconvenient for the patient as his urinary system is directly affected.
The common prostate medical problems are prostate infection, enlarged prostate and cancer of the prostate.
Prostate infection, often known as prostatitis, is the most common prostate-related overuse injury in men younger than 55 years. Infections with the prostate related are classified into four types – acute bacterial prostatitis, chronic bacterial prostatitis, chronic abacterial prostatitis and prosttodynia.
Acute bacterial prostatitis is the least common of most types of prostate infection. It is caused by bacteria perfectly located at the large intestines or urinary tract. Patients may go through fever, chills, body aches, back pains and urination problems. This condition is treated by utilizing antibiotics or non-steroid anti-inflammatory drugs (NSAIDs) to help remedy the swelling.
Chronic bacterial prostatitis is really a condition associated with a particular defect inside gland and also the persistence presence of bacteria within the urinary tract. It can be brought on by trauma towards the urinary tract or by infections from other parts with the body. A patient can experience testicular pain, back pains and urination problems. Although it is uncommon, it could be treated by removal in the prostate defect accompanied by the employment antibiotics and NSAIDs to take care of the inflammation.
Non-bacterial prostatitis accounts for approximately 90% coming from all prostatitis cases; however, researchers have not even to create the causes of these conditions. Some researchers think that chronic non-bacterial prostatitis occur because of unknown infectious agents while other believe that intensive exercise and lifting could cause these infections.
Maintaining a Healthy Prostate
To prevent prostate diseases, an appropriate diet is important. These are some of the steps you can take to keep your prostate healthy.
1. Drink sufficient water. Proper hydration is critical for our health and wellbeing and will also also keep your urinary track clean.
2. Some studies claim that a few ejaculations each week will help to prevent cancer of the prostate.
3. Eat steak in moderation. It has been shown that consuming over four meals of beef weekly will raise the risk of prostate diseases and cancer.
4. Maintain an appropriate diet with cereals, vegetable and fruits to be sure sufficient intake of nutrients essential for prostate health.
The most significant measure to consider to make certain a wholesome prostate is usually to opt for regular prostate health screening. If you are forty years of age and above, you need to choose prostate examination at least one time a year.