HEMOGLOBIN: NORMAL VALUES

Hematologists are not in agreement as to the “normal” amount of hemoglobin in the blood, nor is there agreement as to what amount of hemoglobin can be considered “a hemoglobin value of 100 per cent.” Different hospitals base reports of hemoglobin on different standards, which obviously can be misleading.By biometric study of the great mass of data on hemoglobin content that has become available as a result of the blood procurement program, it should be possible to determine what “normal” values are and to provide a basis for uniformity in reporting.     

血液的超声衰减研究

本文从细胞声吸收、细胞相对血浆的粘滞运动和细胞声散射三种机制出发,论讨了血液中细胞级结构对其超声衰减的贡献,与实验结果有较好的符合。分析表明,细胞级结构对超声衰减的贡献中,细胞吸收占主导地位,相对粘滞运动损耗贡献不超过15％,而细胞引起的声散射可以略而不计。     

NORMAL PSYCHOLOGICAL CHANGES IN ADOLESCENCE

It behooves physicians to be aware that adolescents are different people, that they have a vast capacity for change, that they often exhibit the sickest kind of behavior, which may be very frightening to us and to them.Physicians have to be able to wait and not become panicked by the turbulences, confusions, and contradictions that mark the adolescent''s behavior; to keep in mind at all times that much of what is going on is relatively normal behavior in the drive toward maturation and adulthood; that the adolescent has to cope with his sexual drive which is continually frustrated, that he has to cope with the problems of emancipation from parental authority, that he has to cope with an aggressive drive to achieve and to dominate.Parents, too, have to be understanding and ready to render unselfish support, for they continue to be the source of strength and security, and even the source of healthy restrictions. Adults must be aware that the adolescent struggles with his conscience and its dictates, and we should look upon cliques, groups and clubs as a healthy assistance in the preservation of standards, ethics, and mores.