Works by Schäfer, Helmut

Results: 77

Kontinuierliche Produktherstellung in Mühlen.

Published in:

Chemie Ingenieur Technik (CIT), 1968, v. 40, n. 15, p. 773, doi. 10.1002/cite.330401511

By:

Schäfer, Helmut

Publication type:

Article

Kontinuierliches Lösen von Salzen im Gleichstrom.

Published in:

Chemie Ingenieur Technik (CIT), 1961, v. 33, n. 11, p. 743, doi. 10.1002/cite.330331106

By:

Schäfer, Helmut

Publication type:

Article

Kontinuierliches Lösen von Salzen im Gegenstrom.

Published in:

Chemie Ingenieur Technik (CIT), 1961, v. 33, n. 8, p. 551, doi. 10.1002/cite.330330808

By:

Schäfer, Helmut

Publication type:

Article

Nanopartikel für die Aufwärtskonversion.

Published in:

Angewandte Chemie, 2011, v. 123, n. 26, p. 5928, doi. 10.1002/ange.201005159

By:

Haase, Markus;
Schäfer, Helmut

Publication type:

Article

Electro-Oxidation of Ni42 Steel: A Highly Active Bifunctional Electrocatalyst.

Published in:

Advanced Functional Materials, 2016, v. 26, n. 35, p. 6402, doi. 10.1002/adfm.201601581

By:

Schäfer, Helmut;
Chevrier, Daniel M.;
Zhang, Peng;
Stangl, Johannes;
Müller‐Buschbaum, Klaus;
Hardege, Jörg D.;
Kuepper, Karsten;
Wollschläger, Joachim;
Krupp, Ulrich;
Dühnen, Simon;
Steinhart, Martin;
Walder, Lorenz;
Sadaf, Shamaila;
Schmidt, Mercedes

Publication type:

Article

Use of percentiles for the body mass index in anorexia nervosa: Diagnostic, epidemiological and...

Published in:

International Journal of Eating Disorders, 1996, v. 19, n. 4, p. 359, doi. 10.1002/(SICI)1098-108X(199605)19:4<359::AID-EAT4>3.0.CO;2-K

By:

Heberbrand, Johannes;
Himmelmann, Günther W.;
Heseker, Helmut;
Schäfer, Helmut;
Remschmidt, Helmut

Publication type:

Article

Body weight in acute anorexia nervosa and at follow-up assessed with percentiles for the body...

Published in:

International Journal of Eating Disorders, 1996, v. 19, n. 4, p. 347, doi. 10.1002/(SICI)1098-108X(199605)19:4<347::AID-EAT3>3.0.CO;2-L

By:

Heberbrand, Johannes;
Himmelmann, Günther W.;
Wewetzer, Christoph;
Gutenbrunner, Cornelius;
Schäfer, Helmut;
Remschmidt, Helmut

Publication type:

Article

Integral and Associated Lysosomal Membrane Proteins.

Published in:

Traffic, 2007, v. 8, n. 12, p. 1676, doi. 10.1111/j.1600-0854.2007.00643.x

By:

Schröder, Bernd;
Wrocklage, Christian;
Pan, Cuiping;
Jäger, Ralf;
Kösters, Bernd;
Schäfer, Helmut;
Elsässer, Hans-Peter;
Mann, Matthias;
Hasilik, Andrej

Publication type:

Article

Free‐Sustaining Three‐Dimensional S235 Steel‐Based Porous Electrocatalyst for Highly Efficient and Durable Oxygen Evolution.

Published in:

ChemSusChem, 2018, v. 11, n. 20, p. 3661, doi. 10.1002/cssc.201801351

By:

Han, Weijia;
Kuepper, Karsten;
Hou, Peilong;
Akram, Wajiha;
Eickmeier, Henning;
Hardege, Jörg;
Steinhart, Martin;
Schäfer, Helmut

Publication type:

Article

Oxidized Mild Steel S235: An Efficient Anode for Electrocatalytically Initiated Water Splitting.

Published in:

ChemSusChem, 2015, v. 8, n. 18, p. 3099, doi. 10.1002/cssc.201500666

By:

Schäfer, Helmut;
Küpper, KarstEN;
Wollschläger, Joachim;
Kashaev, Nikolai;
Hardege, Jörg;
Walder, LorENz;
MohsEN Beladi ‐ Mousavi, Seyyed;
Hartmann ‐ Azanza, Brigitte;
Steinhart, Martin;
Sadaf, Shamaila;
Dorn, Falk

Publication type:

Article

Optimal Robust Two-Stage Designs for Genome-Wide Association Studies.

Published in:

Annals of Human Genetics, 2009, v. 73, n. 6, p. 638, doi. 10.1111/j.1469-1809.2009.00544.x

By:

Thuy Trang Nguyen;
Pahl, Roman;
Schäfer, Helmut

Publication type:

Article

From Bad Electrochemical Practices to an Environmental and Waste Reducing Approach for the Generation of Active Hydrogen Evolving Electrodes.

Published in:

Angewandte Chemie International Edition, 2019, v. 58, n. 48, p. 17383, doi. 10.1002/anie.201908649

By:

Ring, Lisa;
Pollet, Bruno G.;
Chatenet, Marian;
Abbou, Sofyane;
Küpper, Karsten;
Schmidt, Mercedes;
Huck, Marten;
Gries, Aurelia;
Steinhart, Martin;
Schäfer, Helmut

Publication type:

Article

A general statistical principle for changing a design any time during the course of a trial.

Published in:

Statistics in Medicine, 2004, v. 23, n. 16, p. 2497, doi. 10.1002/sim.1852

By:

Müller, Hans-Helge;
Schäfer, Helmut

Publication type:

Article

Construction of group sequential designs in clinical trials on the basis of detectable treatment differences.

Published in:

Statistics in Medicine, 2004, v. 23, n. 9, p. 1413, doi. 10.1002/sim.1751

By:

Schäfer, Helmut;
Müller, Hans-Helge

Publication type:

Article

Modification of the sample size and the schedule of interim analyses in survival trials based on data inspections.

Published in:

2001

By:

Schäfer, Helmut;
Müller, Hans-Helge;
Schäfer, H;
Müller, H H

Publication type:

journal article

Regional confidence bands for ROC curves.

Published in:

2000

By:

Jensen, Katrin;
Müller, Hans-Helge;
Schäfer, Helmut;
Jensen, K;
Müller, H H;
Schäfer, H

Publication type:

journal article

Preface.

Published in:

Statistics in Medicine, 2000, v. 19, n. 4, p. 421, doi. 10.1002/(SICI)1097-0258(20000229)19:4<421::AID-SIM346>3.0.CO;2-Y

By:

Schäfer, Helmut;
Gail, Mitchell H.;
Royston, Patrick

Publication type:

Article

Optimization of testing times and critical values in sequential equivalence testing.

Published in:

Statistics in Medicine, 1999, v. 18, n. 14, p. 1769, doi. 10.1002/(SICI)1097-0258(19990730)18:14<1769::AID-SIM213>3.0.CO;2-H

By:

Müller, Hans-Helge;
Schäfer, Helmut

Publication type:

Article

STATISTICAL BASIS OF REFERENCE VALUES IN LABORATORY MEDICINE.

Published in:

Statistics in Medicine, 1996, v. 15, n. 20, p. 2266, doi. 10.1002/(SICI)1097-0258(19961030)15:20<2266::AID-SIM365>3.0.CO;2-6

By:

SCHÄFER, HELMUT

Publication type:

Article

Interim Design Modifications in Time-to-Event Studies.

Published in:

Journal of the American Statistical Association, 2012, v. 107, n. 497, p. 341, doi. 10.1080/01621459.2011.644141

By:

Irle, Sebastian;
Schäfer, Helmut

Publication type:

Article

A Novel Heteroaromatic System: 2,1,3-Benzothiadiazinylium Derivatives.

Published in:

Angewandte Chemie International Edition, 1977, v. 16, n. 11, p. 780, doi. 10.1002/anie.197707801

By:

Kosbahn, Wolfgang;
Schäfer, Helmut

Publication type:

Article

Biomarker-driven population enrichment for adaptive oncology trials with time to event endpoints.

Published in:

2016

By:

Mehta, Cyrus;
Schäfer, Helmut;
Daniel, Hanna;
Irle, Sebastian

Publication type:

journal article

Oxygen Plasma Effects on Zero Resistance Behavior of Yb,Er-doped YBCO (123) Based Superconductors.

Published in:

Zeitschrift für Anorganische und Allgemeine Chemie, 2014, v. 640, n. 10, p. 1900, doi. 10.1002/zaac.201400131

By:

Schäfer, Helmut;
Banko, Franziska;
Nordmann, Jörg;
Voss, Benjamin;
Steinhart, Martin;
Walder, Lorenz;
Rathmann, Dirk

Publication type:

Article

Co-morbidity of adult attention-deficit/hyperactivity disorder with focus on personality traits and related disorders in a tertiary referral center.

Published in:

European Archives of Psychiatry & Clinical Neuroscience, 2007, v. 257, n. 6, p. 309, doi. 10.1007/s00406-007-0722-6

By:

Jacob, Christian P.;
Romanos, Jasmin;
Dempfle, Astrid;
Heine, Monika;
Windemuth-Kieselbach, Christine;
Kruse, Anja;
Reif, Andreas;
Walitza, Susanne;
Romanos, Marcel;
Strobel, Alexander;
Brocke, Burkhard;
Schäfer, Helmut;
Schmidtke, Armin;
Böning, Jobst;
Lesch, Klaus-Peter

Publication type:

Article

Refining the impact of TCF7L2 gene variants on type 2 diabetes and adaptive evolution.

Published in:

Nature Genetics, 2007, v. 39, n. 2, p. 218, doi. 10.1038/ng1960

By:

Helgason, Agnar;
Pálsson, Snæbjörn;
Thorleifsson, Gudmar;
Grant, Struan F. A.;
Emilsson, Valur;
Gunnarsdottir, Steinunn;
Adeyemo, Adebowale;
Yuanxiu Chen;
Guanjie Chen;
Reynisdottir, Inga;
Benediktsson, Rafn;
Hinney, Anke;
Hansen, Torben;
Andersen, Gitte;
Borch-Johnsen, Knut;
Jorgensen, Torben;
Schäfer, Helmut;
Faruque, Mezbah;
Doumatey, Ayo;
Jie Zhou

Publication type:

Article

Synthesis of Hexagonal Yb3+,Er3+-Doped NaYF4 Nanocrystals at Low Temperature.

Published in:

Advanced Functional Materials, 2009, v. 19, n. 19, p. 3091, doi. 10.1002/adfm.200900642

By:

Schäfer, Helmut;
Ptacek, Pavel;
Eickmeier, Henning;
Haase, Markus

Publication type:

Article

Thin Patterned Lithium Niobate Films by Parallel Additive Capillary Stamping of Aqueous Precursor Solutions.

Published in:

Advanced Engineering Materials, 2022, v. 24, n. 6, p. 1, doi. 10.1002/adem.202101159

By:

Alarslan, Fatih;
Vittadello, Laura;
Klein, Jonas;
Khan, Qaiser Ali;
Kijatkin, Christian;
Haase, Markus;
Schäfer, Helmut;
Imlau, Mirco;
Steinhart, Martin

Publication type:

Article

Das Prinzip des Reisens ist auch das Prinzip des Fragens: Botschafter der Sphinx.

Published in:

Zeitschrift für Interkulturelle Germanistik, 2019, v. 10, n. 2, p. 141, doi. 10.14361/zig-2019-100212

By:

SCHÄFER, HELMUT

Publication type:

Article

Mutation screen and association studies for the fatty acid amide hydrolase (FAAH) gene and early onset and adult obesity.

Published in:

BMC Medical Genetics, 2010, v. 11, p. 1, doi. 10.1186/1471-2350-11-2

By:

Müller, Timo D;
Brönner, Günter;
Wandolski, Melanie;
Carrie, Jophia;
Nguyen, Trang T;
Greene, Brandon H;
Scherag, André;
Grallert, Harald;
Vogel, Carla IG;
Scherag, Susann;
Rief, Winfried;
Wichmann, Hans-Erich;
Illig, Thomas;
Schäfer, Helmut;
Hebebrand, Johannes;
Hinney, Anke

Publication type:

Article

Gastric inhibitory polypeptide receptor: association analyses for obesity of several polymorphisms in large study groups.

Published in:

BMC Medical Genetics, 2009, v. 10, p. 1, doi. 10.1186/1471-2350-10-19

By:

Vogel, Carla I. G.;
Scherag, André;
Brönner, Günter;
Nguyen, Thuy T.;
Hai-Jun Wang;
Grallert, Harald;
Bornhorst, Alexa;
Rosskopf, Dieter;
Völzke, Henry;
Reinehr, Thomas;
Rief, Winfried;
Illig, Thomas;
Wichmann, H-Erich;
Schäfer, Helmut;
Hebebrand, Johannes;
Hinney, Anke

Publication type:

Article

Non-replication of an association of CTNNBL1 polymorphisms and obesity in a population of Central European ancestry.

Published in:

BMC Medical Genetics, 2009, v. 10, p. 1, doi. 10.1186/1471-2350-10-14

By:

Vogel, Carla I. G.;
Greene, Brandon;
Scherag, André;
Müller, Timo D.;
Friedel, Susann;
Grallert, Harald;
Heid, Iris M.;
Illig, Thomas;
Wichmann, H-Erich;
Schäfer, Helmut;
Hebebrand, Johannes;
Hinney, Anke

Publication type:

Article

'Fat mass and obesity associated' gene (FTO): No significant association of variant rs9939609 with weight loss in a lifestyle intervention and lipid metabolism markers in German obese children and adolescents.

Published in:

BMC Medical Genetics, 2008, v. 9, p. 1, doi. 10.1186/1471-2350-9-85

By:

Müller, Timo D.;
Hinney, Anke;
Scherag, André;
Nguyen, Thuy T.;
Schreiner, Felix;
Schäfer, Helmut;
Hebebrand, Johannes;
Roth, Christian L.;
Reinehr, Thomas

Publication type:

Article

From Bad Electrochemical Practices to an Environmental and Waste Reducing Approach for the Generation of Active Hydrogen Evolving Electrodes.

Published in:

Angewandte Chemie, 2019, v. 131, n. 48, p. 17544, doi. 10.1002/ange.201908649

By:

Ring, Lisa;
Pollet, Bruno G.;
Chatenet, Marian;
Abbou, Sofyane;
Küpper, Karsten;
Schmidt, Mercedes;
Huck, Marten;
Gries, Aurelia;
Steinhart, Martin;
Schäfer, Helmut

Publication type:

Article

Adaptive Designs from the Viewpoint of an Academic Biostatistician.

Published in:

Biometrical Journal, 2006, v. 48, n. 4, p. 586

By:

Helmut Schäfer

Publication type:

Article

An Overview of Statistical Approaches for Adaptive Designs and Design Modifications.

Published in:

Biometrical Journal, 2006, v. 48, n. 4, p. 507

By:

Helmut Schäfer;
Nina Timmesfeld;
Hans-Helge Müller

Publication type:

Article

S27.5: Two-Stage Genotyping in Association Studies incorporating Linkage Disequilibrium between Markers.

Published in:

Biometrical Journal, 2004, v. 46, p. 60, doi. 10.1002/bimj.200490112

By:

Scherag, André;
Dempfle, Astrid;
Geller, Frank;
Schäfer, Helmut

Publication type:

Article

S29.2: Flexible Testing in Clinical Trials With Binary Response.

Published in:

Biometrical Journal, 2004, v. 46, p. 63, doi. 10.1002/bimj.200490268

By:

Müller, Hans-Helge;
Schäfer, Helmut

Publication type:

Article

A Clinically Orientated Approach for Combining Discordant and Concordant Sib Pairs.

Published in:

Biometrical Journal, 1997, v. 39, n. 3, p. 263, doi. 10.1002/bimj.4710390302

By:

Ziegler, Andreas;
Hebebrand, Johannes;
Schäfer, Helmut

Publication type:

Article

Ultrafine Sanding Paper: A Simple Tool for Creating Small Particles.

Published in:

Small, 2015, v. 11, n. 8, p. 931, doi. 10.1002/smll.201303930

By:

Schäfer, Helmut;
Hess, Claudia;
Tobergte, Heinrich;
Volf, Anna;
Ichilmann, Sachar;
Eickmeier, Henning;
Voss, Benjamin;
Kashaev, Nikolai;
Nordmann, Jörg;
Akram, Wajiha;
Hartmann‐Azanza, Brigitte;
Steinhart, Martin

Publication type:

Article

Upconverting Nanoparticles.

Published in:

Angewandte Chemie International Edition, 2011, v. 50, n. 26, p. 5808, doi. 10.1002/anie.201005159

By:

Haase, Markus;
Schäfer, Helmut

Publication type:

Article

Ghrelin Receptor Gene: Identification of Several Sequence Variants in Extremely Obese Children and Adolescents, Healthy Normal-Weight and Underweight Students, and Children with Short Normal Stature.

Published in:

Journal of Clinical Endocrinology & Metabolism, 1996, v. 81, n. 1, p. 157, doi. 10.1210/jc.2003-031395

By:

HAI-JUN WANG;
GELLER, FRANK;
DEMPFLE, ASTRID;
SCHAÜBLE, NADINE;
FRIEDEL, SUSANN;
LICHTNER, PETER;
FONTENLA-HORRO, FRANCISCO;
WUDY, STEFAN;
HAGEMANN, SANDRA;
GORTNER, LUDWIG;
HUSE, KLAUS;
REMSCHMIDT, HELMUT;
BETTECKEN, THOMAS;
MEITINGER, THOMAS;
SCHÄFER, HELMUT;
HEBEBRAND, JOHANNES;
HINNEY, ANKE

Publication type:

Article

Zur Katalysator-Desaktivierung bei der Metathese von 1-Buten.

Published in:

Chemie Ingenieur Technik (CIT), 1989, v. 61, n. 8, p. 658, doi. 10.1002/cite.330610829

By:

Schäfer, Helmut;
Hofmann, Hanns

Publication type:

Article

Sicherheitsmaßnahmen bei der Lagerung chemischer Produkte. Neue Empfehlungen des Verbandes der Chemischen Industrie.

Published in:

Chemie Ingenieur Technik (CIT), 1988, v. 60, n. 1, p. 9, doi. 10.1002/cite.330600104

By:

Schäfer, Helmut K.

Publication type:

Article

Das Begasen von viskosen Flüssigkeiten durch eine abwärts gerichtete Zweistoff-Düse (2. Teil).

Published in:

Chemie Ingenieur Technik (CIT), 1982, v. 54, n. 10, p. 928, doi. 10.1002/cite.330541017

By:

Stein, Werner Alexander;
Schäfer, Helmut

Publication type:

Article

Das Begasen von viskosen Flüssigkeiten durch eine abwärts gerichtete Zweistoff-Düse.

Published in:

Chemie Ingenieur Technik (CIT), 1982, v. 54, n. 6, p. 616, doi. 10.1002/cite.330540618

By:

Stein, Werner Alexander;
Schäfer, Helmut

Publication type:

Article

Aufgaben der Sicherheitsabteilung bei Planung und Betrieb von Chemieanlagen.

Published in:

Chemie Ingenieur Technik (CIT), 1975, v. 47, n. 11, p. 487, doi. 10.1002/cite.330471113

By:

Schäfer, Helmut K.

Publication type:

Article

PERMORY-MPI: a program for high-speed parallel permutation testing in genome-wide association studies.

Published in:

Bioinformatics, 2012, v. 28, n. 8, p. 1168

By:

Steiß, Volker;
Letschert, Thomas;
Schäfer, Helmut;
Pahl, Roman

Publication type:

Article

PERMORY: an LD-exploiting permutation test algorithm for powerful genome-wide association testing.

Published in:

Bioinformatics, 2010, v. 26, n. 17, p. 2093, doi. 10.1093/bioinformatics/btq399

By:

Pahl, Roman;
Schäfer, Helmut

Publication type:

Article

Transmission disequilibrium analysis of the functional 5-HT 3A receptor variant C178T in early-onset obsessive-compulsive disorder.

Published in:

Journal of Psychopharmacology, 2007, v. 21, n. 8, p. 833, doi. 10.1177/0269881106073560

By:

Mössner, Rainald;
Döring, Nicole;
Scherag, André;
Schäfer, Helmut;
Herpertz-Dahlmann, Beate;
Remschmidt, Helmut;
Schulz, Eberhard;
Renner, Tobias;
Wewetzer, Christoph;
Warnke, Andreas;
Lesch, Klaus-Peter;
Walitza, Susanne

Publication type:

Article

Gene–environment interactions for complex traits: definitions, methodological requirements and challenges.

Published in:

European Journal of Human Genetics, 2008, v. 16, n. 10, p. 1164, doi. 10.1038/ejhg.2008.106

By:

Dempfle, Astrid;
Scherag, André;
Hein, Rebecca;
Beckmann, Lars;
Chang-Claude, Jenny;
Schäfer, Helmut

Publication type:

Article