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B. Kjeldstad · SciRah

Researcher profile · Semantic Scholar

B. Kjeldstad

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B. Kjeldstad — researcher profile on SciRah

h-index: 19
Works: 63
Citations: 1,283

Most-cited papers

Low level laser versus placebo in the treatment of tennis elbow.
O. Vasseljen, N. Høeg, B. Kjeldstad, A. Johnsson +1 more
1992Scandinavian Journal of Rehabilitation Medicine128 citations Open access
Semantic Scholar
Variability of UV Irradiance in Europe
G. Seckmeyer, D. Pissulla, Merle Glandorf, D. Henriques +21 more
2007Photochemistry and Photobiology124 citations Open access
Semantic Scholar
SUSPEN intercomparison of ultraviolet spectroradiometers
A. Bais, B. Gardiner, H. Slaper, M. Blumthaler +21 more
2001117 citations Open access
Semantic Scholar
AN ACTION SPECTRUM FOR BLUE AND NEAR ULTRAVIOLET IN ACTIVATION OF Propionibacterium acnes; WITH EMPHASIS ON A POSSIBLE PORPHYRIN PHOTOSENSITIZATION
B. Kjeldstad, A. Johnsson
1986Photochemistry and Photobiology102 citations
Semantic Scholar
Input of organic carbon as determinant of nutrient fluxes, light climate and productivity in the Ob and Yenisey estuaries
D. Hessen, J. Carroll, B. Kjeldstad, A. Korosov +3 more
201069 citations
Semantic Scholar
Fluorescence from pilosebaceous follicles
A. Johnsson, B. Kjeldstad, T. Melø
2004Archives of Dermatological Research68 citations
Semantic Scholar
Black carbon aerosols variation in Kathmandu valley, Nepal
R. Sharma, B. Bhattarai, B. Sapkota, Mohan B. Gewali +1 more
201262 citations
Semantic Scholar
Influence of pH on porphyrin production in Propionibacterium acnes
B. Kjeldstad, A. Johnsson, S. Sandberg
2004Archives of Dermatological Research55 citations
Semantic Scholar
Solar Radiation Potential at Four Sites of Nepal
Khem N Pondyal, B. Bhattarai, B. Sapkota, B. Kjeldstad
201249 citations Open access
Semantic Scholar
Estimation of Global Solar Radiation Using Clearness Index and Cloud Transmittance Factor at Trans-Himalayan Region in Nepal
K. Poudyal, B. Bhattarai, B. Sapkota, B. Kjeldstad
201241 citations Open access
Semantic Scholar
Europe’s darker atmosphere in the UV-B
G. Seckmeyer, Merle Glandorf, Cordula Wichers, R. McKenzie +14 more
2008Photochemical and Photobiological Sciences36 citations
Semantic Scholar
Photoinactivation of Propionibacterium acnes by Near-Ultraviolet Light
B. Kjeldstad
1984Zeitschrift fur Naturforschung. Section C, Biosciences33 citations Open access
Semantic Scholar
DIFFERENT PHOTOINACTIVATION MECHANISMS IN Propionibacterium acnes FOR NEAR‐ULTRAVIOLET and VISIBLE LIGHT
B. Kjeldstad
1987Photochemistry and Photobiology32 citations
Semantic Scholar
UV (280 to 400 nm) optical properties in a Norwegian fjord system and an intercomparison of underwater radiometers
B. Kjeldstad, Ø. Frette, S. R. Erga, H. Browman +4 more
200329 citations Open access
Semantic Scholar
Measurement of the intracellular pH of Propionibacterium acnes: comparison between the fluorescent probe BCECF and 31P-NMR spectroscopy.
C. Futsaether, B. Kjeldstad, A. Johnsson
1993Canadian Journal of Microbiology (print)26 citations
Semantic Scholar
Changes in polyphosphate composition and localization in Propionibacterium acnes after near-ultraviolet irradiation.
B. Kjeldstad, M. Heldal, H. Nissen, A. Bergan +1 more
1991Canadian Journal of Microbiology (print)24 citations
Semantic Scholar
Estimation of the daily global solar radiation; Nepal experience
K. Poudyal, B. Bhattarai, B. Sapkota, B. Kjeldstad +1 more
201323 citations
Semantic Scholar
Influence of clouds on the spectral actinic flux density in the lower troposphere (INSPECTRO): overview of the field campaigns
S. Thiel, L. Ammannato, A. Bais, B. Bandy +26 more
200723 citations Open access
Semantic Scholar
Intercomparison and harmonization of UV Index measurements from multiband filter radiometers
B. Johnsen, B. Kjeldstad, Tommy Nakken Aalerud, L. T. Nilsen +8 more
200822 citations
Semantic Scholar
Comparison of ground-based measurements of solar UV radiation at four sites on the Tibetan Plateau.
Gelsor Norsang, Yi-Chun Chen, Nima Pingcuo, A. Dahlback +5 more
2014Applied Optics19 citations
Semantic Scholar
Estimation of Global Solar Radiation using Pyranometer and NILU-UV Irradiance Meter at Pokhara Valley in Nepal
K. Poudyal, B. Bhattarai, B. Sapkota, B. Kjeldstad +1 more
201418 citations Open access
Semantic Scholar
Erythemal dose in Kathmandu, Nepal based on solar UV measurements from multichannel filter radiometer, its deviation from satellite and radiative transfer simulations
B. Bhattarai, B. Kjeldstad, Trond Morten Thorseth, A. Bagheri
200717 citations
Semantic Scholar
MOOCs for Norway: new digital learning methods in higher education
B. Kjeldstad
201316 citations
Semantic Scholar
STEREOISOMERIZATION OF ALLENIC CAROTENOIDS : KINETIC, THERMODYNAMIC AND MECHANISTIC ASPECTS
Turid Refvem, Aase Strand, B. Kjeldstad, J. A. Haugan +7 more
199915 citations Open access
Semantic Scholar
A 31P-NMR study of Propionibacterium acnes, including effects caused by near-ultraviolet irradiation.
B. Kjeldstad, A. Johnsson
1987Biochimica et Biophysica Acta14 citations
Semantic Scholar
All-weather ultraviolet solar spectra retrieved at a 0.5-Hz sampling rate.
T. M. Thorseth, B. Kjeldstad
1999Applied Optics11 citations
Semantic Scholar
Ground based comparison of solar UV index in Kathmandu, Pokhara and Biratnagar
N. Sharma, B. Bhattarai, B. Sapkota, B. Kjeldstad
20129 citations
Semantic Scholar
Hyperthermia Induced Polyphosphate Changes in Propionibacterium acnes as Studied by 31P NMR
B. Kjeldstad, A. Johnsson, K. Furuheim, A. Bergan +1 more
1989Zeitschrift für Naturforschung C - A Journal of Biosciences8 citations Open access
Semantic Scholar
Estimation of the Daily Global Solar Radiation using RadEst 3.00 software-A Case Study at Low land Plain Region of Nepal
K. Poudyal, B. Bhattarai, B. Sapkota, B. Kjeldstad
20136 citations Open access
Semantic Scholar
Solar UV radiation measurements across the Tibetan Plateau
Yi-Chun Chen, Gelsor Norsang, Nima Pingcuo, A. Dahlback +5 more
20136 citations Open access
Semantic Scholar
Comparison of Ground Based Measurements of Solar UV Index with Satellite Estimation at Four Sites of Nepal
N. Sharma, B. Bhattarai, B. Sapkota, B. Kjeldstad
20126 citations Open access
Semantic Scholar
Uptake of hematoporphyrin derivative in bacteria and photosensitization of Propionibacterium acnes bacteria
B. Kjeldstad, T. Christensen, A. Johnsson
1986Photobiochemistry and photobiophysics6 citations Open access
Semantic Scholar
Satellite estimation and ground measurements of solar UV index and influence of aerosol in ground based UV data in Kathmandu, Nepal
N. Sharma, B. Bhattarai, B. Sapkota, B. Kjeldstad
20135 citations
Semantic Scholar
Solar UV Irradiance Measurements at Four Sites in Tibet
Norsang Gelsor, Nima Pingcuo, Tsoja Wangmu, B. Kjeldstad +5 more
20125 citations Open access
Semantic Scholar
A case study on biomass burning aerosols: effects on solar UV irradiance, retrieval of aerosol single scattering albedo
A. Bagheri, B. Kjeldstad, B. Johnsen
20085 citations Open access
Semantic Scholar
Comparison of solar UV measurements performed with spectroradiometer and moderate bandwidth multichannel radiometer for different cloud conditions
T. M. Thorseth, B. Kjeldstad, B. Johnsen
20005 citations Open access
Semantic Scholar
Relative percentage difference between ground based and satellite estimation of Solar UV index in four seasons at the measurement sites of nepal
N. Sharma, B. Bhattarai, B. Sapkota, B. Kjeldstad
20124 citations
Semantic Scholar
Variation of Black Carbon Aerosols on Six Continuous Strike Days of Kathmandu Valley: A Case Study
R. Sharma, B. Bhattarai, B. Sapkota, Mohan B. Gewali +1 more
20124 citations Open access
Semantic Scholar
Comparison of UV Index and Total Ozone Column of Aura/OMI and Ground Measurement from Nepal Himalayas
Rishi R. Sharma, B. Kjeldstad, B. Bhattarai
20124 citations Open access
Semantic Scholar
Study on Aerosol Optical Depth in Winter and Summer Season in Bhaktapur
N. Sharma, B. Sapkota, B. Bhattarai, B. Kjeldstad
20114 citations Open access
Semantic Scholar
Results From The Nordic Intercomparison of Ultraviolet Spectroradiometers In Sweden 2000
T. M. Thorseth, B. Kjeldstad, B. Johnsen, M. Blumthaler +2 more
20024 citations
Semantic Scholar
UV Index and Total Ozone Column Climatology of Nepal Himalaya Using TOMS and OMI Data
R. Sharma, B. Kjeldstad, P. Espy
20163 citations Open access
Semantic Scholar
Lamps as means to homogenize solar ultraviolet irradiance measurements performed with different spectroradiometers
B. Kjeldstad, B. Johnsen, T. Koskela
20003 citations
Semantic Scholar
Optical Properties of the Epidermis of Leek (Allium ampeloprasum L.) and Cabbage (Brassica oleracea L.) after Enhanced Ultraviolet-B Radiation
J. Gislefoss, B. Kjeldstad, A. Bakken
19923 citations
Semantic Scholar
No photoinactivation of Propionibacterium acnes with soft laser treatment.
A. Johnsson, B. Kjeldstad, T. Myklebust
1987Dermatologica3 citations
Semantic Scholar
Temporal Variation of Black Carbon Aerosol Concentration during Monsoon in Kathmandu Valley
R. Sharma, B. Bhattarai, B. Sapkota, Mohan B. Gewali +1 more
20142 citations Open access
Semantic Scholar
Chemical Characterization of Airborne Particulates of Kathmandu, Nepal
B. Kjeldstad, Heekwan Lee, R. Pokhrel
20132 citations
Semantic Scholar
UNDERWATER RADIATION MEASUREMENTS: CONSEQUENCES OF AN INCREASED UV-B RADIATION
B. Kjeldstad
20062 citations
Semantic Scholar
International intercomparison of multiband filter radiometers in Oslo 2005
B. Johnsen, B. Kjeldstad, T. N. Aalerud, L. T. Nilsen +27 more
2006SPIE Remote Sensing2 citations
Semantic Scholar
Ground-based ultraviolet radiation measurements in Trondheim
B. Kjeldstad, T. M. Thorseth
2003SPIE Optics + Photonics2 citations
Semantic Scholar

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