In updating
Essential Science IndicatorsSM from the first
bimonthly period of 2009 to the second bimonthly period of 2009, a
total of 1,965 hot papers were identified, of which 1,313 (66.8%) were
new.
Some papers have comments sent in by the author(s) of
the paper which include images and descriptions of their work.
Field: Agricultural Sciences
Article Title: A toxicologic and dermatologic assessment of cyclic and
non-cyclic terpene alcohols when used as fragrance ingredients
Authors: Belsito, D;Bickers, D;Bruze, M;Calow, P;Greim, H;Hanifin,
JM;Rogers, AE;Saurat, JH;Sipes, IG;Tagami, H;RIFM EXPERT Panel
Journal: FOOD CHEM TOXICOL
Volume: 46
Issue: 11
Page: S1-S71
Year: Suppl. S NOV 2008
* Univ Missouri Kansas City, Amer Dermatol Associates LLC, 6333 Long
Ave,3rd Floor, Shawnee, KS 66216 USA.
* Univ Missouri Kansas City, Amer Dermatol Associates LLC, Shawnee, KS
66216 USA.
* Columbia Univ, Med Ctr, Dept Dermatol, New York, NY 10032 USA.
* Malmo Univ Hosp, Dept Occupat & Environm Dermatol, SE-20502
Malmo, Sweden.
* Environm Assessment Inst, Inst Miliovurdering, DK-1361 Copenhagen K,
Denmark.
* Tech Univ Munich, Inst Toxicol & Environm Hyg, D-85354 Freising
Weihenstephan, Germany.
* Oregon Hlth & Sci Univ, Dept Dermatol, Portland, OR 97201
USA.
* Boston Univ, Sch Med, Dept Pathol & Lab Med, Boston, MA 02118
USA.
* Hosp Cantonal Univ, Clin & Policlin Dermatol, CH-1211 Geneva 14,
Switzerland.
* Univ Arizona, Coll Med, Dept Pharmacol, Tucson, AZ 85724 USA.
Field: Biology & Biochemistry
Article Title: Cyclical DNA methylation of a transcriptionally active
promoter
Authors: Metivier, R;Gallais, R;Tiffoche, C;Le Peron, C;Jurkowska,
RZ;Carmouche, RP;Ibberson, D;Barath, P;Demay, F;Reid, G;Benes,
V;Jeltsch, A;Gannon, F;Salbert, G
Journal: NATURE
Volume: 452
Issue: 7183
Page: 45-U2
Year: MAR 6 2008
* Univ Rennes 1, CNRS, Equipe SPARTE,GFAS IFR 140, UMR 6026, Campus
Beaulieu, F-35042 Rennes, France.
* Univ Rennes 1, CNRS, Equipe SPARTE,GFAS IFR 140, UMR 6026, F-35042
Rennes, France.
* Jacobs Univ Bremen, D-28759 Bremen, Germany.
* European Mol Biol Lab, D-69117 Heidelberg, Germany.
New Hot Paper Comment
by:
Norbert
Krause
Field: Chemistry
Article Title: Golden opportunities in stereoselective catalysis
Authors: Bongers,
N;Krause,
N
Journal: ANGEW CHEM INT ED
Volume: 47
Issue: 12
Page: 2178-2181
Year: 2008
* Dortmund Univ Technol, Otto Hahn Str 6, D-44227 Dortmund,
Germany.
* Dortmund Univ Technol, D-44227 Dortmund, Germany.
New Hot Paper Comment by:Eric Van
Cutsem
Field: Clinical Medicine
Article Title: KRAS wild-type state predicts survival and is associated
to early radiological response in metastatic colorectal cancer treated
with cetuximab
Authors: De Roock, W;Piessevaux, H;De Schutter, J;Janssens, M;De
Hertogh, G;Personeni, N;Biesmans, B;Van Laethem, JL;Peeters, M;Humblet,
Y;Van
Cutsem, E;Tejpar, S
Journal: ANN ONCOL
Volume: 19
Issue: 3
Page: 508-515
Year: MAR 2008
* Katholieke Univ Leuven, Univ Hosp Gasthuisberg, Digest Oncol Unit,
Herestr 49, B-3000 Louvain, Belgium.
* Katholieke Univ Leuven, Univ Hosp Gasthuisberg, Digest Oncol Unit,
B-3000 Louvain, Belgium.
* Katholieke Univ Leuven, Ctr Human Genet, Louvain, Belgium.
* Catholic Univ Louvain, Clin Univ St Luc, Serv Gastroenterol,
Brussels, Belgium.
* Katholieke Univ Leuven, Univ Hosp Gasthuisberg, Dept Morphol &
Mol Pathol, Louvain, Belgium.
* Univ Libre Bruxelles, Erasme Univ Hosp, Gastrointestinal Canc Unit,
Dept Gastroenterol, Brussels, Belgium.
* State Univ Ghent Hosp, Digest Oncol Unit, B-9000 Ghent,
Belgium.
* Catholic Univ Louvain, Clin Univ St Luc, Ctr Canc, Clin Pathol
Tumorales Colon & Rectum, Brussels, Belgium.
Field: Computer Science
Article Title: A systematic analysis of Hirsch-type indices for
journals
Authors: Schubert, A;Glanzel, W
Journal: J INFORMETR
Volume: 1
Issue: 3
Page: 179-184
Year: JUL 2007
* Hungarian Acad Sci, ISSRU, IRPS, Budapest, Hungary.
* Hungarian Acad Sci, ISSRU, IRPS, Budapest, Hungary.
* Katholieke Univ Leuven, B-3000 Louvain, Belgium.
New Hot Paper Comment by: Kosuke Imai,
Gary King, & Elizabeth Stuart
Field: Economics & Business
Article Title: Misunderstandings between experimentalists and
observationalists about causal inference
Authors:
Imai,
K;King, G;Stuart, EA
Journal: J ROY STATIST SOC SER A STAT
Volume: 171
Issue:
Page: :481-502
Year: Part 2 2008
* Princeton Univ, Dept Polit, Princeton, NJ 08544 USA.
* Princeton Univ, Dept Polit, Princeton, NJ 08544 USA.
* Harvard Univ, Cambridge, MA 02138 USA.
* Johns Hopkins Bloomberg Sch Publ Hlth, Baltimore, MD USA.
New Hot Paper Comment
by: Ingrid Repins
Field: Engineering
Article Title: 19.9%-efficient ZnO/CdS/CuInGaSe2 solar cell with 81.2%
fill factor
Authors:
Repins,
I;Contreras, MA;Egaas, B;DeHart, C;Scharf, J;Perkins,
CL;To, B;Noufi, R
Journal: PROG PHOTOVOLTAICS
Volume: 16
Issue: 3
Page: 235-239
Year: MAY 2008
* Natl Renewable Energy Lab, MS 3219,1617 Cole Blvd, Golden, CO 80401
USA.
* Natl Renewable Energy Lab, Golden, CO 80401 USA.
Field: Environment/Ecology
Article Title: THE LEGACY OF MERCURY CYCLING FROM MINING SOURCES IN AN
AQUATIC ECOSYSTEM: FROM ORE TO ORGANISM
Authors: Suchanek, TH;Richerson, PJ;Zierenberg, RA;Eagles-Smith,
CA;Slotton, DG;Harner, EJ;Osleger, DA;Anderson, DW;Cech, JJ;Schladow,
SG;Colwell, AE;Mount, JF;King, PS;Adam, DP;McElroy, KJ
Journal: ECOL APPL
Volume: 18
Issue: 8
Page: A12-A28
Year: Sp. Iss. SI DEC 2008
* US Geol Survey, Western Ecol Res Ctr, 3020 State Univ Dr E,
Sacramento, CA 95819 USA.
* Univ Calif Davis, Dept Wildlife Fish & Conservat Biol, Davis, CA
95616 USA.
* Univ Calif Davis, Dept Environm Sci & Policy, Davis, CA 95616
USA.
* Univ Calif Davis, Dept Geol, Davis, CA 95616 USA.
* US Geol Survey, Western Ecol Res Ctr, Davis Field Stn, Davis, CA
95616 USA.
* W Virginia Univ, Dept Stat, Morgantown, WV 26506 USA.
* Univ Calif Davis, Dept Civil & Environm Engn, Davis, CA 95616
USA.
* Lake Cty Vector Control Dist, Lakeport, CA 95453 USA.
* Cty Lake Special Dist, Lakeport, CA 95453 USA.
New Hot Paper Comment
by:
Timothy
M. Lenton & Hans Joachim Schellnhuber
Field: Geosciences
Article Title: Tipping elements in the Earth's climate system
Authors:
Lenton,
TM;Held, H;Kriegler, E;Hall, JW;Lucht, W;Rahmstorf,
S;Schellnhuber,
HJ
Journal: PROC NAT ACAD SCI USA
Volume: 105
Issue: 6
Page: 1786-1793
Year: FEB 12 2008
* Univ E Anglia, Sch Environm Sci, Norwich NR4 7TJ, Norfolk,
England.
* Univ E Anglia, Sch Environm Sci, Norwich NR4 7TJ, Norfolk,
England.
* Tyndall Ctr Climate Change Res, Norwich NR4 7TJ, Norfolk,
England.
* Potsdam Inst Climate Impact Res, D-14412 Potsdam, Germany.
* Carnegie Mellon Univ, Dept Engn & Publ Policy, Pittsburgh, PA
15213 USA.
* Univ Newcastle, Sch Civil Engn & Geosci, Newcastle Upon Tyne NE1
7RU, Tyne & Wear, England.
* Tyndall Ctr Climate Change Res, Newcastle Upon Tyne NE1 7RU, Tyne
& Wear, England.
* Univ Oxford, Environm Change Inst, Oxford OX1 3QY, England.
* Tyndall Ctr Climate Change Res, Oxford OX1 3QY, England.
Field: Immunology
Article Title: TGF-beta-induced Foxp3 inhibits T(H)17 cell
differentiation by antagonizing ROR gamma t function
Authors: Zhou, L;Lopes, JE;Chong, MMW;Ivanov, II;Min, R;Victora,
GD;Shen, YL;Du, JG;Rubtsov, YP;Rudensky, AY;Ziegler, SF;Littman,
DR
Journal: NATURE
Volume: 453
Issue: 7192
Page: 236-U14
Year: MAY 8 2008
* NYU, Sch Med, Skirball Inst, Kimmel Ctr Biol & Med, New York, NY
10016 USA.
* NYU, Sch Med, Skirball Inst, Kimmel Ctr Biol & Med, New York, NY
10016 USA.
* NYU, Sch Med, Dept Microbiol, Howard Hughes Med Inst, New York, NY
10016 USA.
* NYU, Sch Med, Dept Pathol, Howard Hughes Med Inst, New York, NY 10016
USA.
* Benaroya Res Inst, Program Immunol, Seattle, WA 98101 USA.
* Univ Washington, Sch Med, Dept Immunol, Seattle, WA USA.
* Univ Washington, Dept Immunol, Howard Hughes Med Inst, Seattle, WA
98195 USA.
New Hot Paper Comment by: Mikkel
Jørgensen
Field: Materials Science
Article Title: Stability/degradation of polymer solar cells
Authors:
Jorgensen,
M;Norrman, K;Krebs, FC
Journal: SOLAR ENERG MATER SOLAR CELLS
Volume: 92
Issue: 7
Page: 686-714
Year: JUL 2008
* Tech Univ Denmark, Natl Lab Sustainable Energy, Frederiksborgvej 399,
DK-4000 Roskilde, Denmark.
* Tech Univ Denmark, Natl Lab Sustainable Energy, DK-4000 Roskilde,
Denmark.
Field: Microbiology
Article Title: Evolution of mammals and their gut microbes
Authors: Ley, RE;Hamady, M;Lozupone, C;Turnbaugh, PJ;Ramey, RR;Bircher,
JS;Schlegel, ML;Tucker, TA;Schrenzel, MD;Knight, R;Gordon, JI
Journal: SCIENCE
Volume: 320
Issue: 5883
Page: 1647-1651
Year: JUN 20 2008
* Washington Univ, Sch Med, Ctr Genome Sci, St Louis, MO 63108
USA.
* Washington Univ, Sch Med, Ctr Genome Sci, St Louis, MO 63108
USA.
* Univ Colorado, Dept Comp Sci, Boulder, CO 80309 USA.
* Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA.
* Wildlife Sci Int Inc, Nederland, CO 80466 USA.
* St Louis Zoo, St Louis, MO 63110 USA.
* Zool Soc San Diego, San Diego, CA 92112 USA.
Field: Molecular Biology & Genetics
Article Title: Multiple loci identified in a genome-wide association
study of prostate cancer
Authors: Thomas, G;Jacobs, KB;Yeager, M;Kraft, P;Wacholder, S;Orr,
N;Yu, K;Chatterjee, N;Welch, R;Hutchinson, A;Crenshaw, A;Cancel-Tassin,
G;Staats, BJ;Wang, Z;Gonzalez-Bosquet, J;Fang, J;Deng, X;Berndt,
SI;Calle, EE;Feigelson, HS;Thun, MJ;Rodriguez, C;Albanes, D;Virtamo,
J;Weinstein, S;Schumacher, FR;Giovannucci, E;Willett, WC;Cussenot,
O;Valeri, A;Andriole, GL;Crawford, ED;Tucker, M;Gerhard, DS;Fraumeni,
JF;Hoover, R;Hayes, RB;Hunter, DJ;Chanock, SJ
Journal: NAT GENET
Volume: 40
Issue: 3
Page: 310-315
Year: MAR 2008
* NCI, NIH, Dept Hlth & Human Serv, Div Canc Epidemiol & Genet,
Bethesda, MD 20892 USA.
* NCI, NIH, Dept Hlth & Human Serv, Div Canc Epidemiol & Genet,
Bethesda, MD 20892 USA.
* Bioinformed Consulting Serv, Gaithersburg, MD 20877 USA.
* NCI Frederick, SAIC Frederick Inc, Adv Technol Program, Core
Genotyping Facil, Frederick, MD 21702 USA.
* Harvard Univ, Sch Publ Hlth, Dept Epidemiol, Program Mol & Genet
Epidemiol, Boston, MA 02115 USA.
* Amer Canc Soc, Dept Epidemiol & Surveillance Res, Atlanta, GA
30329 USA.
* Natl Publ Hlth Inst, Dept Hlth Promot & Chron Dis Prevent,
FIN-0030 Helsinki, Finland.
* Harvard Univ, Sch Publ Hlth, Dept Nutr, Boston, MA 02115 USA.
* Washington Univ, Sch Med, Div Urol Surg, St Louis, MO 63108
USA.
* Univ Colorado, Hlth Sci Ctr, Dept Surg, Denver, CO 80014 USA.
* NCI, NIH, Dept Hlth & Human Serv, Ctr Canc Res,Off Canc Genom,
Bethesda, MD 20892 USA.
* NCI, NIH, Dept Hlth & Human Serv, Ctr Canc Res,Pediat Oncol
Branch, Bethesda, MD 20892 USA.
* CeRePP Hop Tenon, AP HP, F-75970 Paris, France.
Field: Multidisciplinary
Article Title: Single-molecule DNA sequencing of a viral genome
Authors: Harris, TD;Buzby, PR;Babcock, H;Beer, E;Bowers, J;Braslavsky,
I;Causey, M;Colonell, J;Dimeo, J;Efcavitch, JW;Giladi, E;Gill, J;Healy,
J;Jarosz, M;Lapen, D;Moulton, K;Quake, SR;Steinmann, K;Thayer,
E;Tyurina, A;Ward, R;Weiss, H;Xie, Z
Journal: SCIENCE
Volume: 320
Issue: 5872
Page: 106-109
Year: APR 4 2008
* Helicos Biosci Corp, 1 Kendall Sq, Cambridge, MA 02139 USA.
* Helicos Biosci Corp, Cambridge, MA 02139 USA.
* Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA.
* Stanford Univ, Dept Bioengn, Stanford, CA 94305 USA.
* Howard Hughes Med Inst, Stanford, CA 94305 USA.
New Hot Paper Comment by: Werner
Hacke
Field: Neuroscience & Behavior
Article Title: Guidelines for management of ischaemic stroke and
transient ischaemic attack 2008 - The European Stroke Organisation
(ESO) Executive Committee and the ESO Writing Committee
Authors:
Hacke,
W
Journal: CEREBROVASC DIS
Volume: 25
Issue: 5
Page: 457-507
Year: 2008
* Univ Heidelberg, Dept Neurol, Neuenheimer Feld 400, DE-69120
Heidelberg, Germany.
* Univ Heidelberg, Dept Neurol, DE-69120 Heidelberg, Germany.
New Hot Paper Comment by: Nader G. Abraham
and Attallah Kappas
Field: Pharmacology & Toxicology
Article Title: Pharmacological and clinical aspects of heme
oxygenase
Authors:
Abraham,
NG;Kappas, A
Journal: PHARMACOL REV
Volume: 60
Issue: 1
Page: 79-127
Year: MAR 2008
* New York Med Coll, Dept Med & Pharmacol, Basic Sci Bldg,
Valhalla, NY 10595 USA.
* New York Med Coll, Dept Med & Pharmacol, Valhalla, NY 10595
USA.
* Rockefeller Univ Hosp, New York, NY 10021 USA.
Field: Physics
Article Title: Doping-dependent phase diagram of LaOMAs (M = V-Cu) and
electron-type superconductivity near ferromagnetic instability
Authors: Xu, G;Ming, W;Yao, Y;Dai, X;Zhang, SC;Fang, Z
Journal: EPL
Volume: 82
Issue: 6
Page: art.
Year: no.-67002 JUN 2008
* Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys,
Beijing 100190, Peoples R China.
* Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys,
Beijing 100190, Peoples R China.
* Stanford Univ, Dept Phys, Stanford, CA 94305 USA.
Field: Plant & Animal Science
Article Title: The draft genome of the transgenic tropical fruit tree
papaya (Carica papaya Linnaeus)
Authors: Ming, R;Hou, SB;Feng, Y;Yu, QY;Dionne-Laporte, A;Saw,
JH;Senin, P;Wang, W;Ly, BV;Lewis, KLT;Salzberg, SL;Feng, L;Jones,
MR;Skelton, RL;Murray, JE;Chen, CX;Qian, WB;Shen, JG;Du, P;Eustice,
M;Tong, E;Tang, HB;Lyons, E;Paull, RE;Michael, TP;Wall, K;Rice,
DW;Albert, H;Wang, ML;Zhu, YJ;Schatz, M;Nagarajan, N;Acob, RA;Guan,
PZ;Blas, A;Wai, CM;Ackerman, CM;Ren, Y;Liu, C;Wang, JM;Wang, JP;Na,
JK;Shakirov, EV;Haas, B;Thimmapuram, J;Nelson, D;Wang, XY;Bowers,
JE;Gschwend, AR;Delcher, AL;Singh, R;Suzuki, JY;Tripathi, S;Neupane,
K;Wei, HR;Irikura, B;Paidi, M;Jiang, N;Zhang, WL;Presting, G;Windsor,
A;Navajas-Perez, R;Torres, MJ;Feltus, FA;Porter, B;Li, YJ;Burroughs,
AM;Luo, MC;Liu, L;Christopher, DA;Mount, SM;Moore, PH;Sugimura,
T;Jiang, JM;Schuler, MA;Friedman, V;Mitchell-Olds, T;Shippen,
DE;dePamphilis, CW;Palmer, JD;Freeling, M;Paterson, AH;Gonsalves,
D;Wang, L;Alam, M
Journal: NATURE
Volume: 452
Issue: 7190
Page: 991-U7
Year: APR 24 2008
* Univ Hawaii, Dept Microbiol, Honolulu, HI 96822 USA.
* Univ Hawaii, Dept Microbiol, Honolulu, HI 96822 USA.
* Hawaii Agr Res Ctr, Aiea, HI 96701 USA.
* Univ Illinois, Dept Plant Biol, Urbana, IL 61801 USA.
* Nankai Univ, TEDA Sch Biol Sci & Biotechnol, Tianjin Econ Technol
Dev Area, Tianjin 300457, Peoples R China.
* Tianjin Res Ctr Funct Genom & Biochip, Tianjin Econ Technol Dev
Area, Tianjin 300457, Peoples R China.
* Nankai Univ, Coll Life Sci, Minist Educ, Key Lab Mol Microbiol &
Technol, Tianjin 300071, Peoples R China.
* Univ Maryland, Ctr Bioinformat & Computat Biol, College Pk, MD
20742 USA.
* Univ Hawaii, Dept Mol Biosci & Bioengn, Honolulu, HI 96822
USA.
* Univ Georgia, Plant Genome Mapping Lab, Athens, GA 30602 USA.
* Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA
94720 USA.
* Univ Hawaii, Dept Trop Plant & Soil Sci, Honolulu, HI 96822
USA.
* Rutgers State Univ, Waksman Inst Microbiol, Piscataway, NJ 08854
USA.
* Rutgers State Univ, Dept Plant Biol & Pathol, Piscataway, NJ
08854 USA.
* Penn State Univ, Dept Biol, University Pk, PA 16802 USA.
* Indiana Univ, Dept Biol, Bloomington, IN 47405 USA.
* ARS, USDA, Pacific Basin Agr Res Ctr, Hilo, HI 96720 USA.
* Texas A&M Univ, Dept Biochem & Biophys, College Stn, TX 77843
USA.
* Inst Genom Res, Rockville, MD 20850 USA.
* Univ Illinois, WM Keck Ctr Comparat & Funct Genom, Urbana, IL
61801 USA.
* Univ Tennessee, Dept Mol Sci, Memphis, TN 38163 USA.
* Univ Hawaii, Leeward Community Coll, Pearl City, HI 96782 USA.
* Wicell Res Inst, Madison, WI 53707 USA.
* Michigan State Univ, Dept Hort, E Lansing, MI 48824 USA.
* Univ Wisconsin, Dept Hort, Madison, WI 53706 USA.
* Duke Univ, Dept Biol, Durham, NC 27708 USA.
* Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA.
* Univ Maryland, Dept Mol Genet & Cell Biol, College Pk, MD 20742
USA.
* Maui High Performance Comp Ctr, Kihei, HI 96753 USA.
* Univ Illinois, Dept Cell & Dev Biol, Urbana, IL 61801 USA.
* Univ Illinois, Dept Biochem, Urbana, IL 61801 USA.
* Univ Illinois, Dept Plant Biol, Urbana, IL 61801 USA.
* Appl Biosyst Inc, Foster City, CA 94404 USA.
New Hot Paper Comment
by:
Andrew
Mathews & Colin MacLeod
Field: Psychiatry/Psychology
Article Title: Cognitive vulnerability to emotional disorders
Authors:
Mathews,
A;MacLeod, C
Journal: ANNU REV CLIN PSYCHOL
Volume: 1
Issue:
Page: :167-195
Year: 2005
* MRC, Cognit & Brain Sci Unit, Cambridge, England.
* MRC, Cognit & Brain Sci Unit, Cambridge, England.
* Univ Western Australia, Sch Psychol, Crawley, WA, Australia.
New Hot Paper Comment
by:
Baerbel-Maria
Kurth
Field: Social Sciences, general
Article Title: The German Health Interview and Examination Survey for
Children and Adolescents (KiGGS): an overview of its planning,
implementation and results taking into account aspects of quality
management
Authors:
Kurth,
BM
Journal: BUNDESGESUNDHEITSBLATT-GESUND
Volume: 50
Issue: 5-6
Page: 533-546
Year: MAY-JUN 2007
* Abt Epidemiol & Gesundheitsberichterstattung, Postfach 650261,
D-13302 Berlin, Germany.
* Abt Epidemiol & Gesundheitsberichterstattung, D-13302 Berlin,
Germany.
New Hot Paper Comment by: Paola
Marigo
Field: Space Science
Article Title: Evolution of asymptotic giant branch stars - II. Optical
to far-infrared isochrones with improved TP-AGB models
Authors:
Marigo,
P;Girardi, L;Bressan, A;Groenewegen, MAT;Silva, L;Granato,
GL
Journal: ASTRON ASTROPHYS
Volume: 482
Issue: 3
Page: 883-905
Year: MAY 2008
* Univ Padua, Dipartimento Astron, Vicolo Osservatorio 2, I-35122
Padua, Italy.
* Univ Padua, Dipartimento Astron, I-35122 Padua, Italy.
* Osservatorio Astron Padova INAF, I-35122 Padua, Italy.
* INAOE, Puebla 72840, Mexico.
* Katholieke Univ Leuven, Inst Sterrenkunde, B-3001 Heverlee,
Belgium.
* Osservatorio Astron Trieste INAF, I-34131 Trieste, Italy.