Erratum

In the report by E. T. Walters,. T. J. Carew, and E. R. Kandel (30 Jan., p. 504), labels (B) and (C) of Fig. 1 were inadvertently reversed. Figure 1B should be "Siphon withdrawal," and Fig. 1C should be "Inking."     

Erratum

In the report "Site-specific nick in the T-DNA border sequence as a result of Agrobacterium vir gene expression" by K. Wang et al. (30 Jan., p. 587), figure 2A on page 588 should have shown a 3.2-kilobase band in lane b that was not visible. Also, 1.9-kilobase bands in lane c and g were not visible. A Print that shows the bands in figure 2, A and B, appears below. In addition, reference 24 should have been to J. L. Slightom, L. Jouanin, F. Leach, R. F. Drong, D. Tepfer, EMBO J. 4, 3069 (1985). [See Table A and B in Source PDF].     

Erratum

In the book review by T.J. M. Schopf (30 July, p. 438), the statement that "titles of the articlese not included in the references" of Genome Evolution (G. A. Dover and R. B. Flavell, Eds., Academic Press, New York, 1982) is incorrect; titles are lacking in only one of the reference lists in the book.     

Erratum

In figure 2B (p. 1236) of the report "Induction of CD4(+) human cytolytic T cells specific for HIV-infected cells by a gp160 subunit vaccine" by R. J. Orentas et al. (8 June, p. 1234), the labels for HIV-infected and mock-infected cells were reversed.     

金沙江峡谷退耕经济林地昆虫多样性分析

调查滇西北金沙江峡谷不同退耕经济林地和对照样地的昆虫组成,以喜地表活动的蚁科、植食性的蝗总科和捕食性瓢虫种类为对象,分析Margalef丰富度指数(R)、Shannon-W ie-ner多样性指数(H)和Pielou均匀度指数(J).结果显示:样地A昆虫共10目33科,样地B有6目26科,样地C为6目23科,样地D是7目26科.步甲科、瓢甲科、叶甲科、蝽科、长蝽科、土蝽科和斑腿蝗科等种类在较晚退耕的林地里常见.昆虫物种Margalef丰富度指数以2001年退耕木亡果林地最高,R=3.413 4;Shannon-W iener多样性指数则以2000年退耕还林的青梅林地为最大,H=2.090 1;Pielou均匀度指数值最高的是2001年退耕的撂荒坡地,J=0.999 6.从昆虫多样性来看,退耕还林有利于促进金沙江峡谷的生态恢复.     

甘薯新品系(种)抗蔓割病的室内鉴定

采用薯苗浸液法接种 ,对 2 0 6个甘薯新品系 (种 )进行了室内抗蔓割病鉴定。鉴定结果表明 :抗病 (R)的品系 (种 )有“J1 - 1 ”、“J53 - 1 1 ”、“J1 - 2 1 ”和“97-1 0” ,中抗 (MR)的有2 1个 ,中感 (MS)的有 2 3个 ,感病 (S)的有 56个 ,高感 (HS)的有 1 0 2个。抗病、中抗、中感品种间病情指数差异显著。     

Erratum

In the report "Underexpression of beta cell high K(m), glucose transporters in noninsulin-dependent diabetes" by J. H. Johnson et al. (26 Oct., p. 546), the authors' affiliations were incorrectly given. J. H. Johnson, A. Ogawa, L. Chen, T. Alam, and R. H. Unger are at the Center for Diabetes Research, University of Texas, Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75235 and the Veterans Affairs Medical Center, Dallas, TX 75216. L. Orci is at the University of Geneva School of Medicine, 1211 Geneva 4, Switzerland. C. B. Newgard is at the Center for Diabetes Research, University of Texas, Southwestern Medical Center, Dallas, TX.     

Erratum

The last sentence of the report "Crassulacean acid metabolism in the strangler Clusia rosea Jacq." (6 Sept., p. 969) was incorrectly printed. It should have read, "The 1985 expedition was led by I. P. Ting and J. Hann, with L. Blose, R. E. Bonning, J. C. Broyles, D. W. Stewart, and J. A. Zabilski as participants."     

Hot plasma environment at jupiter: voyager 2 results

Measurements of the hot (electron and ion energies >/=20 and >/= 28 kiloelectron volts, respectively) plasma environment at Jupiter by the low-energy charged particle (LECP) instrument on Voyager 2 have revealed several new and unusual aspects of the Jovian magnetosphere. The magnetosphere is populated from its outer edge into a distance of at least approximately 30 Jupiter radii (R(J)) by a hot (3 x 10(8) to 5 x 10(8) K) multicomponent plasma consisting primarily of hydrogen, oxygen, and sulfur ions. Outside approximately 30 R(J) the hot plasma exhibits ion densities from approximately 10(-1) to approximately 10(-6) per cubic centimeter and energy densities from approximately 10(-8) to 10(-13) erg per cubic centimeter, suggesting a high beta plasma throughout the region. The plasma is flowing in the corotation direction to the edge of the magnetosphere on the dayside, where it is confined by solar wind pressure, and to a distance of approximately 140 to 160 R(J) on the nightside at approximately 0300 local time. Beyond approximately 150 R(J) the hot plasma flow changes into a "magnetospheric wind" blowing away from Jupiter at an angle of approximately 20 degrees west of the sun-Jupiter line, characterized by a temperature of approximately 3 x 10(8) K (26 kiloelectron volts), velocities ranging from approximately 300 to > 1000 kilometers per second, and composition similar to that observed in the inner magnetosphere. The radial profiles of the ratios of oxygen to helium and sulfur to helium (相似文献   

Dahllite Identified as a Constituent of Prodissoconch I of Pinctada martensii (Dunker)

It has been brought to our attention that we did not designate the correct collectors of several of the samples reported in "Lamont radiocarbon measurements III" [Science 124, 154 (27 July 1956)]. The following list gives the proper collectors for several samples in Table 4 under V. Arctic studies: L192B, R. D. Cotell (1952); L261A,B,C, G. Hattersley-Smith (1953); L254A, L248A, R. L. Christie (1954); L254B,C,D, E. W. Marshall (1954); and L248B, G. Hattersley-Smith and A. P. Crary (1954).     

In Process Citation

M. J. S. Belton, (*) J. W. Head III, A. P. Ingersoll, R. Greeley, A. S. McEwen, K. P. Klaasen, D. Senske, R. Pappalardo, G. Collins, A. R. Vasavada, R. Sullivan, D. Simonelli, P. Geissler, M. H. Carr, M. E. Davies, J. Veverka, P. J. Gierasch, D. Banfield, M. Bell, C. R. Chapman, C. Anger, R. Greenberg, G. Neukum, C. B. Pilcher, R. F. Beebe, J. A. Burns, F. Fanale, W. Ip, T. V. Johnson, D. Morrison, J. Moore, G. S. Orton, P. Thomas, R. A. West The first images of Jupiter, Io, Europa, and Ganymede from the Galileo spacecraft reveal new information about Jupiter's Great Red Spot (GRS) and the surfaces of the Galilean satellites. Features similar to clusters of thunderstorms were found in the GRS. Nearby wave structures suggest that the GRS may be a shallow atmospheric feature. Changes in surface color and plume distribution indicate differences in resurfacing processes near hot spots on Io. Patchy emissions were seen while Io was in eclipse by Jupiter. The outer margins of prominent linear markings (triple bands) on Europa are diffuse, suggesting that material has been vented from fractures. Numerous small circular craters indicate localized areas of relatively old surface. Pervasive brittle deformation of an ice layer appears to have formed grooves on Ganymede. Dark terrain unexpectedly shows distinctive albedo variations to the limit of resolution. M. J. S. Belton, National Optical Astronomy Observatories, 950 North Cherry Ave, Tucson, AZ 85719, USA. J. W. Head III, R. Pappalardo, G. Collins, Department of Geological Science, Brown University, Providence, RI 02912, USA. A. P. Ingersoll and A. R. Vasavada, Department of Geology and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA. R. Greeley and R. Sullivan, Department of Geology, Arizona State University, Tempe, AZ 85287-1414, USA. A. S. McEwen, P. Geissler, R. Greenberg, Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 87721, USA. K. P. Klaasen, D. Senske, T. V. Johnson, G. S. Orton, R. A. West, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA. D. Simonelli, J. Veverka, P. J. Gierasch, D. Banfield, M. Bell, J. A. Burns, P. Thomas, Department of Astronomy, Cornell University, Ithaca, NY 14853, USA. M. H. Carr, U.S. Geological Survey, Menlo Park, CA 94025, USA. M. E. Davies, RAND, Santa Monica, CA 90406, USA. C. R. Chapman, Southwest Research Institute, Boulder, CO 80302, USA. C. Anger, ITTRES Ltd, Calgary, Alberta TIY 5Z6, Canada. G. Neukum, Institute for Planetary Exploration, Deutsche Forschunganstalt für Luft und Raumfahrt, Berlin, Germany. C. B. Pilcher, National Aeronautical and Space Administration, Washington, DC 20546, USA. R. F. Beebe, Department of Astronomy, New Mexico State University, Las Cruces, NM 88003, USA. F. Fanale, Institute for Geophysics, University of Hawaii, Honolulu, HI 96822, USA. W. Ip, Max Planck Institute für Aeronomie, Lindau, Germany. D. Morrison and J. Moore, NASA Ames Research Center, Moffett Field, CA 94035, USA. (*) To whom correspondence should be addressed. E-mail: belton@noao.edu.     

鹅观草×大麦属间杂种的研究

本文以分布于四川的鹅观草（Ｒｏｅｇｎｅｒｉａｔｓｕｋｎｓｈｉｅｎｓｉｓ（Ｈｏｎｄａ）Ｂ．Ｒ．Ｌｕ，Ｙｅｎ ｅｔＪ．Ｌ．Ｙａｎｇ　ｖａｒ．ｔｒａｎｓｉｅｎｓ（Ｈａｃｋ．）Ｂ．Ｒ．Ｌｕ，Ｙａｎ　ｅｔ　Ｊ．Ｌ．Ｙａｎｇ，２ｎ＝４２， ＳＳＨＨＹＹＪ作母本，栽培二棱大麦（Ｈｏｒｄｅｕｍ　ｖｕｌｇａｒｅ Ｌ．ｃｖ．ＣＡ－５，２＝１４，ＩＩ）作父 本进行属间杂交，利用杂种幼胚组织培养技术，成功地获得了杂种Ｆ１．杂交结 实率为６．５８％，胚培成苗率为６０．００％．杂种表现为多年生，具有很强的生活力， 形态上表现为双亲的中间类型．Ｆ１自交不孕，用大麦回交亦不结实·杂种具有 预期的２ｎ＝２８（ＳＨＹＩ）条染色体．花粉母细胞减数分裂中期Ｉ平均形成２７．２４个单 价体．０．２０个棒状二价体，０．１８个环形二价体，未发现多价体存在．表明鹅观 草和大麦的染色体组间同源程度低．本文还探讨了大麦育种中利用鹅观草种质 的可能性。     

Corrections and clarifications

Figure 1 (p. 1061) of the report "Revival and identification of bacterial spores in 25- to 40-million-year-old Dominican amber" by R. J. Cano and M. K. Borucki (19 May, p. 1060) was incorrect. The correct figure appears below. [See figure in the pdf file].     

油菜抗除草剂性状的遗传及利用

以抗草甘膦油菜“Q3”和MICMS保持系“宁B6”、“宁B7”及恢复系“宁R1”、“宁R3”为亲本材料,配制杂交组合,研究抗性遗传。结果表明,油菜对草甘膦的抗性为显性性状,由1对基因控制,抗草甘膦基因在F_2和BC_1群体遵循孟德尔分离规律。因此,应用杂交、回交育种方法将CP_4 gox双价基因转育到油菜推广品种中是可行的。     

Erratum

In the report "The response of living cells to very weak electric fields: The thermal noise limit" by J. C. Weaver and R. D. Astumian (26 Jan., p. 459), figures 2 and 3 on page 461 were inadvertently interchanged. The captions were correct.     

Energetic electrons in the magnetosphere of jupiter

Observations of energetic electrons ( greater, similar 0.07 million electron volts) show that the outer magnetosphere of Jupiter consists of a thin disklike, quasitrapping region extending from about 20 to 100 planetary radii (R(J)). This magnetodisk is confined to the vicinity of the magnetic equatorial plane and appears to be an approximate figure of revolution about the magnetic axis of the planet. Hard trapping is observed within a radial distance of about 20 R(J). The omnidirectional intensity J(0) of electrons with energy greater, similar 21 million electron volts within the region 3 r 20 R(J) is given by the following provisional expression in terms of radial distance r and magnetic latitude theta: J(0) = 2.1 x 10(8) exp[-(r/a) - (theta/b)(2)]. In this expression J(0) is particles per square centimeter per second; a = 1.52 R(J) for 3 相似文献   

Corrections and clarifications

In the report "Single molecules observed by near-field scanning optical microscopy" by E. Betzig and R. J. Chichester (26 Nov., p. 1422), figure 2 on page 1423 was incorrectly printed. The arrow representing the molecular dipole p was missing in the top part of the figure. The correct figure appears below. [See figure in the PDF file].     

抗苏云金芽孢杆菌Cry1B毒蛋白质单链抗体的筛选与鉴定

利用人源化噬菌体抗体库筛选抗Bt Cry1B毒蛋白质的单链抗体(Single-chain antibodies,scFv)。将扩增后的噬菌体抗体库与固相化包被的Cry1B毒蛋白质特异性结合,经4轮"吸附-洗脱-扩增"后,富集特异性识别Cry1B毒蛋白质的噬菌体单链抗体。从最后一轮筛选中随机挑取单菌落进行单克隆ELISA鉴定,对阳性克隆进行PCR扩增、DNA电泳鉴定及测序,成功筛选获得8个阳性噬菌体scFvs,经鉴定均有完整外源基因片段插入。挑取阳性值最高的scFv(1E2)建立了基于单链抗体的Cry1B毒蛋白质间接竞争ELISA检测方法。结果表明,Cry1B毒蛋白质对噬菌体scFv(1E2)的抑制中浓度(IC50)为1.075μg/ml,最低检测限(IC10)为0.013 4μg/ml,线性检测范围在0.5μg/ml至4.0μg/ml之间。     

Erratum

Figure 2, part B (p. 100) in the report "Regulation of transendothelial neutrophil migration by endogenous interleukin-8" by A. R. Huber et al. (4 Oct., p. 99) was printed incorrectly. The correct figure (parts A, B, and C) appears below. [See figure in the pdf file].     

Magnetic field of jupiter and its interaction with the solar wind

Jupiter's magnetic field and its interaction with the magnetized solar wind were observed with the Pioneer 10 vector helium magnetometer. The magnetic dipole is directed opposite to that of the earth with a moment of 4.0 gauss R(J)(3) (R(J), Jupiter radius), and an inclination of 15 degrees lying in a system III meridian of 230 degrees . The dipole is offset about 0.1 R(J) north of the equatorial plane and about 0.2 R(J) toward longitude 170 degrees . There is severe stretching of the planetary field parallel to the equator throughout the outer magnetosphere, accompanied by a systematic departure from meridian planes. The field configuration implies substantial plasma effects inside the magnetosphere, such as thermal pressure, centrifugal forces, and differential rotation. As at the earth, the outer boundary is thin, nor diffuse, and there is a detached bow shock.