四川地区幼儿和学龄前儿童的鼻部测量

本文报告１１１６例四川地区幼儿和学龄前儿童（２－７岁）鼻部９项指标的测量均数,性差及年龄发育特点。性差：仅鼻凹鼻底距４－６．５岁等少数指标部分年龄段男女性间出现显著性划异（男＞女）。此外各项指标的绝大多数年龄段男女性间无显著性差异。年龄发育：９项测量指标中７项的生长曲线随年产长而上升,数值随年龄增大,并有１－２个发育高峰;提示鼻部发育具有阶段性;２项指标的曲线随年龄增长变化较小。４项指标男女性的曲     

庭园生态经济系统设计及应用

庭园生态经济系统设计及应用刘东飙邓立平（湖南省益阳市农村能源办公室４１３０００）（湖南省南县农村能源办公室４１３２００）ＤｅｓｉｇｎｉｎｇＯｆＨｏｍｅＧａｒｄｅｎＥｃｏｌｏｍｉｃＳｙｓｔｅｍｗｉｔｈＭｅｔｈａｎｅＧｅｎｅｒａｔｉｎｇａｓａＴｉｅａｎｄ...     

Concentrations of sucrose and nitrogenous compounds in the apoplast of developing soybean seed coats and embryos

The apoplast of developing soybean (Glycine max cv Hodgson) embryos and seed coats was analyzed for sucrose, amino acids, ureides, nitrate, and ammonia. The apoplast concentration of amino acids and nitrate peaked during the most rapid stage of seed filling and declined sharply as the seed attained its maximum dry weight. Amino acids and nitrate accounted for 80 to 95% of the total nitrogen, with allantoin and allantoic acid either absent or present in only very small amounts. Aspartate, asparagine, glutamate, glutamine, serine, alanine, and γ-aminobutyric acid were the major amino acids, accounting for over 70% of the total amino acids present. There was a nearly quantitative conversion of glutamine to glutamate between the seed coat and embryo, most likely resulting from the activity of glutamate synthase found to be present in the seed coat tissue. This processing of glutamine suggests a partly symplastic route for solutes moving from the site of phloem unloading in the seed coat to the embryo.     

Sink to source translocation in soybean

The possibility that phloem loading may occur in the reproductive sink tissues of soybeans (Glycine max Merr. cv Chippewa 64) was examined. When [¹⁴C]sucrose was applied to seed coat tissues from which the developing embryo had been surgically removed, 0.1% to 0.5% of the radioactivity was translocated to the vegetative plant parts. This sink to source translocation was largely unaffected by destroying a band of phloem with steam treatment on the stem above and below the labeled pod. The same steam treatment, however, completely abolished translocation of [¹⁴C]sucrose between mature leaves and developing fruits. These results indicate that the movement of nutrients from developing seed coats to the vegetative plant parts occur in the xylem and that phloem loading does not occur in this sink tissue.     

Plants of common use in Paraguayan folk medicine for regulating fertility

Information on the use of plants for contraception and abortion inducement among the rural indigenous inhabitants of Paraguay was collected by surveying 223 obstetricians and 17 local vendors. Information obtained on 33 commonly used plants is presented in tabular form. For each plant, the table provides 1) the scientific name; 2) the local name; 3) the part of the plant used; 4) how the plant is prepared for consumption; 5) the quantity used, described as a bunch, a handful, a few roots, or pieces; and 6) the taste, described as either pleasant, bitter, or sour. 2 or more of these plants are frequently mixed and administered in combination. The proportions used in these combinations are not very exact. The plants are taken in combination either to create a more concentrated effect or to insure that at least one effective drug will be consumed. 14 of these combinations are presented.     

Localization of a proton-translocating ATPase on sucrose gradients

Ionophore-stimulated ATPase activity and ATP-dependent quinacrine quench were enriched in parallel when microsomal vesicles were prepared from corn (Crow Single Cross Hybrid WF9-Mo17) roots and collected on a cushion of 10% dextran. Activities were highest in the apical 1.5 centimeters of the roots. Vesicles collected on the dextran cushion also contained NADH cytochrome c reductase (enriched in the apical 0.5 cm of the root) and nucleoside diphosphatase (distributed throughout the first four cm). On continuous sucrose gradients, ATP-dependent proton transport and ionophore-stimulated ATPase activity coincided in a broad band extending from 1.08 to 1.15 grams per cubic centimeter with maximum activity at 1.10 to 1.12 grams per cubic centimeter. Large portions of the proton-translocating ATPase activity and ionophore-stimulated ATPase activity were clearly separable from mitochondrial membranes containing cytochrome c oxidase activity and azide-sensitive, pH 8.5 ATPase activity and from membranes bearing β-glucan synthetase I and II. The vesicles coincided with a minor portion of the NADH-cytochrome c reductase and nucleoside diphosphatase activities. It is suggested that the vesicles are of tonoplast origin.     

Traumatic disruption of the fibrous skeleton of the heart, with injury of the tricuspid and mitral valves, aortic annulus, and ventricular septum

In an automobile accident, a young man sustained blunt trauma to the chest that caused injury to the fibrous skeleton of the heart. The mitral and tricuspid valves and their annuli were lacerated, the aortic annulus was separated from the ventricular septum, and the ventricular septum was disrupted; however, with surgical management, the patient survived.     

Chloroplast Division and DNA Synthesis in Light-grown Wheat Leaves

Light-grown 7-day-old wheat seedlings (Triticum aestivum, var. Maris Dove) showed an increase of 200% in plastids per cell between 1.7 and 4.5 centimeters from the leaf base. This increase was the result of divisions of young chloroplasts at various stages of development, and was well separated in distance, and therefore in time from the region of cell division in the basal meristem. [³H]Thymidine was incorporated into plastid DNA throughout the zone of plastid division, but not above it.     

Patients' rights and physician accountability: problems with PSROs

Professional Standards Review Organizations (PSRO's) were established by federal legislation in 1972 to provide a mechanism for review, by locally-established groups of physicians, of the quality and appropriateness of care received by patients under Medicare or Medicaid. The author explores four normative problems associated with PSRO's: the problem of bureaucracy incapable of responding to individual needs; the problem of cost consciousness overcoming the commitment to quality; the problem of interfering with other societal values and goals; and the problem of value judgments being made by professionals rather than patients.