Search Results - (Author, Cooperation:M. J. Roberts)
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1Latest Papers from Table of Contents or Articles in PressD. B. Lobell ; M. J. Roberts ; W. Schlenker ; N. Braun ; B. B. Little ; R. M. Rejesus ; G. L. Hammer
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-05-03Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: *Acclimatization ; *Adaptation, Physiological ; Climate Change ; Crops, Agricultural/*growth & development ; *Droughts ; Soybeans/growth & development ; *Stress, Physiological ; United States ; Zea mays/*growth & developmentPublished by: -
2Latest Papers from Table of Contents or Articles in PressP. M. Edwards ; S. S. Brown ; J. M. Roberts ; R. Ahmadov ; R. M. Banta ; J. A. deGouw ; W. P. Dube ; R. A. Field ; J. H. Flynn ; J. B. Gilman ; M. Graus ; D. Helmig ; A. Koss ; A. O. Langford ; B. L. Lefer ; B. M. Lerner ; R. Li ; S. M. Li ; S. A. McKeen ; S. M. Murphy ; D. D. Parrish ; C. J. Senff ; J. Soltis ; J. Stutz ; C. Sweeney ; C. R. Thompson ; M. K. Trainer ; C. Tsai ; P. R. Veres ; R. A. Washenfelder ; C. Warneke ; R. J. Wild ; C. J. Young ; B. Yuan ; R. Zamora
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-10-03Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
3Latest Papers from Table of Contents or Articles in PressBreglio, K. F., Rahman, R. S., Sa, J. M., Roberts, D. J., Wellems, T. E.
The American Society for Microbiology (ASM)
Published 2018Staff ViewPublication Date: 2018-04-27Publisher: The American Society for Microbiology (ASM)Print ISSN: 0066-4804Electronic ISSN: 1098-6596Topics: BiologyMedicinePublished by: -
4Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-02-07Publisher: Wiley-BlackwellPrint ISSN: 0148-0227Topics: GeosciencesPhysicsPublished by: -
5Latest Papers from Table of Contents or Articles in PressJalal, H., Buchanich, J. M., Roberts, M. S., Balmert, L. C., Zhang, K., Burke, D. S.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-09-21Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Epidemiology, Medicine, Diseases, Online OnlyPublished by: -
6Latest Papers from Table of Contents or Articles in PressS. Shu ; C. Y. Lin ; H. H. He ; R. M. Witwicki ; D. P. Tabassum ; J. M. Roberts ; M. Janiszewska ; S. J. Huh ; Y. Liang ; J. Ryan ; E. Doherty ; H. Mohammed ; H. Guo ; D. G. Stover ; M. B. Ekram ; G. Peluffo ; J. Brown ; C. D'Santos ; I. E. Krop ; D. Dillon ; M. McKeown ; C. Ott ; J. Qi ; M. Ni ; P. K. Rao ; M. Duarte ; S. Y. Wu ; C. M. Chiang ; L. Anders ; R. A. Young ; E. P. Winer ; A. Letai ; W. T. Barry ; J. S. Carroll ; H. W. Long ; M. Brown ; X. S. Liu ; C. A. Meyer ; J. E. Bradner ; K. Polyak
Nature Publishing Group (NPG)
Published 2016Staff ViewPublication Date: 2016-01-07Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
7Latest Papers from Table of Contents or Articles in PressG. E. Winter ; D. L. Buckley ; J. Paulk ; J. M. Roberts ; A. Souza ; S. Dhe-Paganon ; J. E. Bradner
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-05-23Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Azepines/chemistry/*pharmacology/therapeutic use ; Cell Line, Tumor ; Crystallography, X-Ray ; Disease Models, Animal ; *Drug Design ; Leukemia, Promyelocytic, Acute/drug therapy ; Ligands ; Mice ; Molecular Targeted Therapy ; Nuclear Proteins/antagonists & inhibitors/chemistry/*metabolism ; Peptide Hydrolases/*metabolism ; Phthalimides/*chemistry ; Protein Stability/drug effects ; Protein Structure, Tertiary ; Proteolysis/*drug effects ; Tacrolimus Binding Protein 1A/metabolism ; Thalidomide/*analogs & derivatives/chemistry/pharmacology/therapeutic use ; Transcription Factors/antagonists & inhibitors/chemistry/*metabolism ; Ubiquitin-Protein Ligases/metabolismPublished by: -
8Articles: DFG German National LicensesStaff View
ISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: Using typical values of cable parameters and typical connections used in Johnson noise thermometry, a comparison was made between a two-wire and a three-wire transmission line model of a 30-m-long, shielded, twisted-pair cable over a range of frequencies from 0 to 300 kHz. For a 200-Ω source impedance and a 1-MΩ load impedance, the maximum difference between the voltage transfer functions calculated from the two models was 0.415%. For a 500-Ω source impedance, the maximum difference was 0.607%. For a 200-Ω source impedance and a 1-Ω load impedance, the maximum difference between the current transfer functions calculated from the two models was 4.24%. For a 500-Ω source impedance, the maximum difference was approximately 4.47%.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: A technique has been developed for estimating, based on impedance measurements made from only one end, the distributed parameters that characterize the input impedance and voltage transfer function of a nearly lossless, four-conductor cable used as a two-wire transmission line. This technique was used to infer the transfer function of the cable in order to compensate for its filtering effect in measuring the noise voltage and current of a remotely located resistor used as a Johnson noise thermometer.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 1089-7623Source: AIP Digital ArchiveTopics: PhysicsElectrical Engineering, Measurement and Control TechnologyNotes: It is shown that in a system consisting of a bandpass filter followed by an ideal linear detector and then an integrator, with white noise as the system input, the statistical uncertainty of the output of the integrator depends on the shape of the bandpass filter power transfer function. That is, for a constant integration time and a constant equivalent noise bandwidth (defined in the usual sense), the statistical uncertainty of the integrator output is a function of the shape of the bandpass filter power transfer function. A new equivalent noise bandwidth is proposed to account for this variation with filter shape so that the relations derived by Rice for rectangular cutoff bandpass filters can be used.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 0018-7143Topics: BiologyDescription / Table of Contents: COMMONALITY OF SURNAMES BETWEEN GROUPS AS A MEASURE OF POPULATION STRUCTURENotes: SURNAMES AS MARKERS OF INBREEDING AND MIGRATIONURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 0042-5222Topics: English, American StudiesHistoryURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 1432-1238Keywords: Oxygen consumption ; Respiration, artificial ; Spectrum analysis, massSource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Abstract A commercially available multi-patient mass spectrometer based system [MPMS] has been evaluated for the measurement of metabolic gas exchange in artificially ventilated patients. The system automatically measures and displays oxygen uptake, (VO2) carbon dioxide output (VCO2) respiratory quotient (RQ) expired minute volume, (Ve) and the percentage concentration of inspired gases. Measurements of VO2, VCO2, RQ and Ve, obtained using this system were compared with those determined by simultaneous Douglas bag collections. The measurement of carbon dioxide and oxygen concentrations was assessed separately by direct comparison with infra-red and paramagnetic analysis respectively. The MPMS measurements of metabolic gas exchange were found to have insignificant systematic errors with precisions of ±12 ml/min VO2, ±7 ml/min VCO2, ±0.03 RQ and ±0.1 l/min Ve; (2SD).Type of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 1432-1238Keywords: Computers ; Critical care ; Respiration, artifical ; Models, biologicalSource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Abstract We have developed a technique for simulating artificially ventilated patients using a computer model of the respiratory system and have investigated its ability to predict the patient's response to alterations in the ventilation regime. The majority of those studied were in a stable condition following cardiac surgery. Predictions for PaO2 showed a reasonable correlation with measured values (r=0.94), although individual predictions could differ appreciably (SEE =±17.3 mmHg). Predictions for PaCO2 correlated less well (r=0.89, SEE=±2.0 mmHg) and there was a consistent tendency to overestimate this variable. The least accurate predictions were those for Pv2 (r=0.61, SEE=±3.8 mmHg). Errors in prediction were attributable to deficiencies in the model (most importantly the three-compartment lung and the modelling of CO2 production, storage and excretion), compounded by unpredictable alterations in the patient's physiology (mainly VO2, VCO2 and Qt). However, allowing for accepted clinical variability and routine measurement accuracy, the predictions are generally reasonable. This suggests that, with some further modifications, computer modelling of this, and other, systems may prove to be a clinically and educationally useful technique.Type of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 1432-1203Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineNotes: Summary Pedigrees of all known cases, on Shetland, of Down's syndrome, cytogenetically confirmed as trisomy 21, and of a control for each patient matched by birth date, sex and birth place, were traced over a minimum of eight generations. Mean kinship coefficients in all pairs of Down's syndrome patients and in all pairs of controls were similar. The kinship between the father and mother of each case shows that the parents are more closely related than the general level of relationship in the population, suggesting some recessive element in the etiology. It is argued that the effect of the resulting increased homozygosity would be to prevent the loss of the conceptus that occurs in the majority of trisomy 21 conceptions.Type of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesO'Dor, R. K. ; Andrade, Y. ; Webber, D. M. ; Sauer, W. H. H. ; Roberts, M. J. ; Smale, M. J. ; Voegeli, F. M.
Springer
Published 1998Staff ViewISSN: 1573-5117Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract RAPT was developed to use systems of semi-autonomous buoys with hydrophones and radio transmitters to continuously monitor the positions and performance of multiple objects, animals and/or people tagged with miniature acoustic transmitters under water. Buoys communicate signal arrival times to shore, ship or aircraft based computers which triangulate positions in three dimensions and decode telemetered information such as heart rate, respiration rate, temperature, salinity and light encoded in pulse intervals. It is the only way of tracking with high-resolution (meters) at intermediate ranges (10’s–1000’s of meters) in seawater and the most accurate in freshwater. The technique is powerful and flexible with wide application, but is constrained by tradeoffs between electrical power and signal accuracy under extreme conditions. Technological solutions to some of these constraints are possible, but optimization of information gathering, in many cases, simply requires more experience and can be achieved by software, information sharing and a cadre of trained personnel.Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 1573-2703Source: Springer Online Journal Archives 1860-2000Topics: MathematicsTechnologyNotes: Abstract The proptotype chemical reaction scheme, the cubic autocatalator, A + 2B → 3B; B → C is taken in a closed system, with A formed from the precursor P by the simple step P → A. The pooled chemical approximation is invoked whereby the concentration of P can be assumed to remain constant throughout. The effects of allowing the quadratic autocatalytic reaction A + B → 2B and the uncatalysed reaction A → B in the scheme are considered in detail. The full scheme is described by the non-dimensional parameters µ (measuring the reaction rate of the initiation step) ands andr (measuring the reaction rates of the quadratic autocatalytic and the uncatalysed steps respectively). It is shown, provided only thatr ors (or both) are non-zero, no matter how small, the solution remains bounded for all (positive) values of µ, whereas withr =s = 0 the solution is bounded only for µ 〉 µ0 (µ0 = 0.900 32). It is shown that withr = 0 ands ≠ 0 the governing equations have a Hopf bifurcation at µ = 1 −s producing a stable limit cycle which exists for all µ in 0 〈 µ 〈1 −s. The behaviour of these limit cycles as µ → 0 is also discussed.Type of Medium: Electronic ResourceURL: