A Treatise on Hygiene and Public Health: With Special Reference to the TropicsScientific Publishing Company, 1953 - 787 sider |
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Side 51
... necessary . This is due in part to the mechanical protection which the bacteria enjoy in the presence of turbidity ... necessary . For treated water , stored water or filtered water , 30 minutes ' contact may be sufficient , but for ...
... necessary . This is due in part to the mechanical protection which the bacteria enjoy in the presence of turbidity ... necessary . For treated water , stored water or filtered water , 30 minutes ' contact may be sufficient , but for ...
Side 283
... necessary for larger sewers to produce the same velocity as in smaller ones . The fall should be equable , and all sudden changes in the level should be avoided ; a sewer of 10 feet in diameter should have a fall of 2 feet per mile ...
... necessary for larger sewers to produce the same velocity as in smaller ones . The fall should be equable , and all sudden changes in the level should be avoided ; a sewer of 10 feet in diameter should have a fall of 2 feet per mile ...
Side 358
... necessary . A trained staff is needed to aid the mother ; early and com-- plete notification of births to the health department is necessary if prevention is to be begun at the earliest oppor- tunity and to be effective ; and facilities ...
... necessary . A trained staff is needed to aid the mother ; early and com-- plete notification of births to the health department is necessary if prevention is to be begun at the earliest oppor- tunity and to be effective ; and facilities ...
Innhold
INTRODUCTORY | 1 |
Preventive MedicinePublic Health Administration | 20 |
CHAPTER II | 77 |
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Vanlige uttrykk og setninger
acid amount animal areas bacilli bacteria becomes Bengal beri-beri blood body boiling carbohydrate carbon carried carriers cause cent child chlorine cholera colour contains death diet digestion diphtheria disinfection drain dust dysentery effect eggs epidemic excreta factor faeces female fever filter filtered water flea ghee give heat hygiene immunity important inches India infection infectious diseases intestinal kala-azar known large number larvae latrines leprosy less malaria material measures mental method milk mortality mosquitoes necessary night-soil nutritive occurs organic matter parasites patient period persons pipe plague poisoning pollution population prevent protein public health removed rice salts sanitary sewage sewer skin slow sand filters small-pox soil solution spirochaetes supply surface symptoms tank temperature tion treatment tropical tuberculosis typhus urine usually vaccine vegetable ventilation virus vitamin washing water-supply