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Arand Michael - One of the best experts on this subject based on the ideXlab platform.
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Vinylchlorid [MAK value documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated vinyl chloride [75‐01‐4] considering all toxicological endpoints. Vinyl chloride is a genotoxic liver carcinogen in humans and animals. The re‐evaluation showed that a maximum concentration at the workplace (MAK value) cannot be derived and vinyl chloride remains classified in Carcinogen Category 1. However, the Commission has, for the first time, established an exposure‐risk relationship for a carcinogen using an approach similar to that of the Dutch Expert Committee on Occupational Safety. Pre‐defined excess risks for hepatic angiosarcomas after occupational exposure to vinyl chloride were calculated from two large epidemiological studies. The exposure‐risk relationships for both studies were similar. Concentrations of 40, 4, and 0.4 ml/m3 for a 40‐year exposure correspond to risks of 4:1000, 4:10 000, and 4:100 000, respectively. A 40‐year exposure to 1 ml/m3 thus results in a risk of 1:10 000. These risk values also cover the risks for hepatocellular carcinomas. Vinyl chloride is a mutagen in vitro and in vivo. It can reach the testes of animals, but does not lead to dominant lethal mutations in mice and rats and is therefore not classified as a germ cell mutagen. Vinyl chloride from the gas phase is not taken up via the skin in toxicologically relevant amounts. Studies on sensitization are not available and there are no reports on sensitization in humans
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Polyethylenglykole (PEG) (mittlere Molmasse 200–600) [MAK Value Documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated polyethylene glycols (PEGs) (average molar mass 200–600) [25322‐68‐3] considering all toxicological endpoints. In 13‐week studies in rats, the NOAEC for aerosols of PEG 200 and PEG 400 was the highest concentration tested of 1000 mg/m3. Taking into account the increased respiratory volume at the workplace (see List of MAK and BAT Values, Sections I b and I c), the extrapolation of data in animals to humans and the preferred value approach, the maximum concentration at the workplace (MAK value) has now been lowered to 200 mg/m3 for the inhalable fraction. PEG 300 is composed of PEG 200 and PEG 400. PEG 600 is composed of 50% PEG 400. Therefore, the MAK value also applies to PEG 300 and PEG 600. In a chronic study at 2000 mg PEG 400/kg body weight and day, the body weight gain in rats was diminished. Therefore, the critical effect of PEGs is expected to be systemic and PEGs are classified in Peak Limitation Category II. As the half‐life is between 2 and 4 hours, the excursion factor of 2 is confirmed. Because formation of a mist is possible, exposure should be minimized for reasons of occupational safety and hygiene. Several studies in rats, mice and rabbits with PEG 200 and PEG 400 show that the margins between the NOAECs for developmental toxicity scaled to a concentration at the workplace and the MAK value of 200 mg/m3 are sufficient. Therefore, damage to the embryo or foetus is unlikely when the MAK value is not exceeded and PEGs remain classified in Pregnancy Risk Group C. PEGs are not genotoxic and are not suspected to be carcinogenic. According to skin absorption models, PEGs are not taken up via the skin in toxicologically relevant amounts. A large number of studies in humans show that PEGs are not skin sensitizers, however, it cannot be excluded that autoxidation products of PEG might induce a low number of positive reactions. There are no data on respiratory sensitization
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Polytetrafluorethen [MAK Value Documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has evaluated polytetrafluoroethene [9002‐84‐0] to derive a maximum concentration at the workplace (MAK value), considering all toxicological endpoints. Available publications are described in detail. As polytetrafluoroethene is an insoluble and chemically inert polymer, showing no systemic toxicity after subchronic oral dosing, polytetrafluoroethene granular dusts are considered to be biopersistent. According to the mechanistic model, chronic inhalative overload of alveolar particle clearance results in particle‐induced inflammation and diverse proliferative tissue changes in lungs. The general threshold limit value and all its classifications for the respirable and inhalable fractions are applied to polytetrafluoroethene: For the respirable fraction, a MAK value of 0.3 mg/m3 × density (2.2 g/cm3) is set with Peak Limitation Category II and an excursion factor of 8. It is classified in Carcinogen Category 4 and in Pregnancy Risk Group C. For the inhalable fraction, a MAK value of 4 mg/m3 is set. The inhalable fraction is also assigned to Pregnancy Risk Group C because polytetrafluoroethene is an insoluble and inert polymer, which is not systemically toxic after oral dosing. There are no data on genotoxicity, sensitization or dermal absorption. As polytetrafluoroethene is an insoluble polymer, genotoxic and sensitizing effects and a significant contribution of skin absorption to systemic toxicity are not expected
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Natriumpyrithion [MAK Value Documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated sodium pyrithione [3811‐73‐2; 15922‐78‐8] considering all toxicological endpoints. Available publications and unpublished study reports are described in detail. Sodium pyrithione is neurotoxic in rats and rabbits, but not in monkeys. As there is no sufficient mechanistic explanation for the observed differences between the species, the rat as the most sensitive species is used for the derivation of a maximum concentration at the workplace (MAK value). The NOAEC in a 90‐day inhalation study with rats is 1.1 mg/m3. In a chronic feeding study with rats, a NAEL of 0.16 mg/kg body weight and day is derived from the LOAEL of 0.5 mg/kg body weight and day. Both the NOAEC and the NAEL correspond to a MAK value of 0.2 mg/m3 for the inhalable fraction. As a systemic effect is critical, the substance remains classified in Peak Limitation Category II. As the initial half‐life of sodium pyrithione is in the range of up to 2.8 hours, an excursion factor of 2 is assigned. In developmental toxicity studies, the most critical effects of sodium pyrithione are skeletal anomalies in rats. NOAELs for developmental effects are 2 mg/kg body weight and day after oral treatment of rats as well as 3 and 5 mg/kg body weight and day after dermal application to rats and rabbits, respectively. The differences between the NOAELs for rats and rabbits scaled to an inhalation concentration at the workplace and the MAK value are considered sufficient. Therefore, damage to the embryo or foetus is unlikely when the MAK value is not exceeded and sodium pyrithione is assigned to Pregnancy Risk Group C. Sodium pyrithione is still regarded as a non‐genotoxic and non‐carcinogenic substance. Skin contact may contribute significantly to systemic toxicity and sodium pyrithione remains designated with an “H” notation. Sensitization is not expected based on the limited data available
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1,4‐Dioxan [MAK Value Documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated 1,4‐dioxane [123‐91‐1] considering all toxicological endpoints. Available publications and unpublished study reports are described in detail. The critical effect is nasal toxicity and irritation as well as carcinogenic effects in the nose, liver, and kidneys. New carcinogenicity studies with 1,4‐dioxane in drinking water confirm the previous tumour findings in rats and mice. Squamous cell carcinomas in the rat nose, also occurring in a long‐term rat inhalation study at 1250 ml/m3, are a result of direct tissue contact with 1,4‐dioxane in the drinking water. At 50 ml/m3 (LOAEC, lowest observed adverse effect level), no increase in tumour incidences, but nuclear enlargement, atrophy, and respiratory metaplasia in the nasal cavity were noted. The mechanisms involved in the tumour development in the nose are most likely cytotoxicity, inflammation, regenerative cell proliferation and hyperplasia. As the primary mode of action is non‐genotoxic and genotoxic effects play no or at most a minor part at cytotoxic doses, 1,4‐dioxane remains in Carcinogen Category 4. A NAEC of 16.67 ml/m3 (LOAEC / 3) for effects in the nose was calculated from the long‐term rat inhalation study, which is in the same range as the NOAEC of 20 ml/m3 from studies with 2‐ to 8‐hour inhalation exposure of volunteers. To provide additional protection from tumour induction in the nose, the MAK value is lowered to 10 ml/m3. As the critical effect of 1,4‐dioxane is local and no irritation was observed in the study with 2‐hour exposure of volunteers to 20 ml/m3, Peak Limitation Category I and the excursion factor of 2 are retained. There is an adequate margin between the NOAEC for developmental toxicity and the MAK value. Therefore, damage to the embryo or foetus is unlikely when the MAK value is not exceeded and 1,4‐dioxane remains assigned to Pregnancy Risk Group C. Because skin contact is expected to contribute significantly to systemic toxicity, the substance remains designated with “H”. Limited data do not show a sensitizing potential
Philip Reiss - One of the best experts on this subject based on the ideXlab platform.
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psychometric validation of a German Language version of a prom for urethral stricture surgery and preliminary testing of supplementary ed and ui constructs
World Journal of Urology, 2016Co-Authors: Luis A. Kluth, Marianne Schmid, Armin Soave, Tim Ludwig, Natalie Christ, Michael Rink, Roland Dahlem, Clemens M. Rosenbaum, Andreas Becker, Philip ReissAbstract:Purpose To validate a German Language version of the patient-reported outcome measurement (PROM) following urethral stricture surgery (USS) in a cohort of men undergoing one-stage buccal mucosa graft urethroplasty (BMGU) for urethral stricture. Furthermore, to explore the responsiveness of erectile function (EF) and urinary incontinence (UI) constructs in the context of this intervention.
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psychometric validation of a German Language version of a prom for urethral stricture surgery and preliminary testing of supplementary ed and ui constructs
World Journal of Urology, 2016Co-Authors: Luis A. Kluth, Marianne Schmid, Armin Soave, Tim Ludwig, Natalie Christ, Michael Rink, Roland Dahlem, Clemens M. Rosenbaum, Andreas Becker, Philip ReissAbstract:To validate a German Language version of the patient-reported outcome measurement (PROM) following urethral stricture surgery (USS) in a cohort of men undergoing one-stage buccal mucosa graft urethroplasty (BMGU) for urethral stricture. Furthermore, to explore the responsiveness of erectile function (EF) and urinary incontinence (UI) constructs in the context of this intervention. The USS-PROM captures voiding symptoms (ICIQ-MLUTS) and health-related quality of life (HRQoL) (EQ-5D). To evaluate EF and UI, the IIEF-5 and ICIQ-UI SF were included. Between March 2012 and April 2013, all patients undergoing BMGU at our institution were prospectively enrolled in this study. Psychometric assessment included internal consistency, test–retest reliability, criterion validity and responsiveness. Ninety-three men completed the USS-PROM before and 3 months after surgery, with 40 (43 %) also completing the USS-PROM 6 months after surgery to assess reliability. Internal consistency: for the ICIQ-MLUTS, Cronbach’s α was 0.83. The test–retest intraclass correlation coefficient was 0.94. There was a negative correlation between change in ICIQ-MLUTS total score and change in Q max (r = −0.40). All values exceeded our predefined thresholds. Significant improvements of voiding symptoms and HRQoL demonstrate responsiveness to change (all p values 0.05), IIEF-5 scores improved significantly (p = 0.048). The German Language USS-PROM shows similar psychometric properties to the English Language version. This instrument can be improved by assessing EF by the use of IIEF-5. Further studies with larger patient cohorts are needed to evaluate the significance of measuring UI in urethroplasty patients.
Hartwig A - One of the best experts on this subject based on the ideXlab platform.
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Vinylchlorid [MAK value documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated vinyl chloride [75‐01‐4] considering all toxicological endpoints. Vinyl chloride is a genotoxic liver carcinogen in humans and animals. The re‐evaluation showed that a maximum concentration at the workplace (MAK value) cannot be derived and vinyl chloride remains classified in Carcinogen Category 1. However, the Commission has, for the first time, established an exposure‐risk relationship for a carcinogen using an approach similar to that of the Dutch Expert Committee on Occupational Safety. Pre‐defined excess risks for hepatic angiosarcomas after occupational exposure to vinyl chloride were calculated from two large epidemiological studies. The exposure‐risk relationships for both studies were similar. Concentrations of 40, 4, and 0.4 ml/m3 for a 40‐year exposure correspond to risks of 4:1000, 4:10 000, and 4:100 000, respectively. A 40‐year exposure to 1 ml/m3 thus results in a risk of 1:10 000. These risk values also cover the risks for hepatocellular carcinomas. Vinyl chloride is a mutagen in vitro and in vivo. It can reach the testes of animals, but does not lead to dominant lethal mutations in mice and rats and is therefore not classified as a germ cell mutagen. Vinyl chloride from the gas phase is not taken up via the skin in toxicologically relevant amounts. Studies on sensitization are not available and there are no reports on sensitization in humans
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Natriumpyrithion [MAK Value Documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated sodium pyrithione [3811‐73‐2; 15922‐78‐8] considering all toxicological endpoints. Available publications and unpublished study reports are described in detail. Sodium pyrithione is neurotoxic in rats and rabbits, but not in monkeys. As there is no sufficient mechanistic explanation for the observed differences between the species, the rat as the most sensitive species is used for the derivation of a maximum concentration at the workplace (MAK value). The NOAEC in a 90‐day inhalation study with rats is 1.1 mg/m3. In a chronic feeding study with rats, a NAEL of 0.16 mg/kg body weight and day is derived from the LOAEL of 0.5 mg/kg body weight and day. Both the NOAEC and the NAEL correspond to a MAK value of 0.2 mg/m3 for the inhalable fraction. As a systemic effect is critical, the substance remains classified in Peak Limitation Category II. As the initial half‐life of sodium pyrithione is in the range of up to 2.8 hours, an excursion factor of 2 is assigned. In developmental toxicity studies, the most critical effects of sodium pyrithione are skeletal anomalies in rats. NOAELs for developmental effects are 2 mg/kg body weight and day after oral treatment of rats as well as 3 and 5 mg/kg body weight and day after dermal application to rats and rabbits, respectively. The differences between the NOAELs for rats and rabbits scaled to an inhalation concentration at the workplace and the MAK value are considered sufficient. Therefore, damage to the embryo or foetus is unlikely when the MAK value is not exceeded and sodium pyrithione is assigned to Pregnancy Risk Group C. Sodium pyrithione is still regarded as a non‐genotoxic and non‐carcinogenic substance. Skin contact may contribute significantly to systemic toxicity and sodium pyrithione remains designated with an “H” notation. Sensitization is not expected based on the limited data available
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1,4‐Dioxan [MAK Value Documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated 1,4‐dioxane [123‐91‐1] considering all toxicological endpoints. Available publications and unpublished study reports are described in detail. The critical effect is nasal toxicity and irritation as well as carcinogenic effects in the nose, liver, and kidneys. New carcinogenicity studies with 1,4‐dioxane in drinking water confirm the previous tumour findings in rats and mice. Squamous cell carcinomas in the rat nose, also occurring in a long‐term rat inhalation study at 1250 ml/m3, are a result of direct tissue contact with 1,4‐dioxane in the drinking water. At 50 ml/m3 (LOAEC, lowest observed adverse effect level), no increase in tumour incidences, but nuclear enlargement, atrophy, and respiratory metaplasia in the nasal cavity were noted. The mechanisms involved in the tumour development in the nose are most likely cytotoxicity, inflammation, regenerative cell proliferation and hyperplasia. As the primary mode of action is non‐genotoxic and genotoxic effects play no or at most a minor part at cytotoxic doses, 1,4‐dioxane remains in Carcinogen Category 4. A NAEC of 16.67 ml/m3 (LOAEC / 3) for effects in the nose was calculated from the long‐term rat inhalation study, which is in the same range as the NOAEC of 20 ml/m3 from studies with 2‐ to 8‐hour inhalation exposure of volunteers. To provide additional protection from tumour induction in the nose, the MAK value is lowered to 10 ml/m3. As the critical effect of 1,4‐dioxane is local and no irritation was observed in the study with 2‐hour exposure of volunteers to 20 ml/m3, Peak Limitation Category I and the excursion factor of 2 are retained. There is an adequate margin between the NOAEC for developmental toxicity and the MAK value. Therefore, damage to the embryo or foetus is unlikely when the MAK value is not exceeded and 1,4‐dioxane remains assigned to Pregnancy Risk Group C. Because skin contact is expected to contribute significantly to systemic toxicity, the substance remains designated with “H”. Limited data do not show a sensitizing potential
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Polytetrafluorethen [MAK Value Documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has evaluated polytetrafluoroethene [9002‐84‐0] to derive a maximum concentration at the workplace (MAK value), considering all toxicological endpoints. Available publications are described in detail. As polytetrafluoroethene is an insoluble and chemically inert polymer, showing no systemic toxicity after subchronic oral dosing, polytetrafluoroethene granular dusts are considered to be biopersistent. According to the mechanistic model, chronic inhalative overload of alveolar particle clearance results in particle‐induced inflammation and diverse proliferative tissue changes in lungs. The general threshold limit value and all its classifications for the respirable and inhalable fractions are applied to polytetrafluoroethene: For the respirable fraction, a MAK value of 0.3 mg/m3 × density (2.2 g/cm3) is set with Peak Limitation Category II and an excursion factor of 8. It is classified in Carcinogen Category 4 and in Pregnancy Risk Group C. For the inhalable fraction, a MAK value of 4 mg/m3 is set. The inhalable fraction is also assigned to Pregnancy Risk Group C because polytetrafluoroethene is an insoluble and inert polymer, which is not systemically toxic after oral dosing. There are no data on genotoxicity, sensitization or dermal absorption. As polytetrafluoroethene is an insoluble polymer, genotoxic and sensitizing effects and a significant contribution of skin absorption to systemic toxicity are not expected
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Benzotriazol [MAK Value Documentation in German Language, 2019]
Wiley-VCH Verlag, 2019Co-Authors: Hartwig A, Mak Commission, Arand MichaelAbstract:The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area has re‐evaluated benzotriazole [95‐14‐7], considering all toxicological endpoints. Available publications and unpublished study reports are described in detail. A genotoxic potential is not found in bacterial or mammalian cell systems in vitro and benzotriazole does not induce micronuclei in the bone marrow of mice. In oral carcinogenicity studies in rats and mice, benzotriazole causes tumours in various organs with a low incidence of glioma and oligodendroglioma in the brain of rats. These rarely occur in control animals and are therefore considered to be substance‐induced. For this reason, benzotriazole is suspected of being carcinogenic and is classified in Carcinogen Category 3B. A NOAEL of 12.5 mg/kg body weight and day is obtained for bleeding of mucous membranes at nose and mouth and salivation at 5 mg/kg body weight and day from a subchronic oral toxicity study in rats. As an inhalation study has not been performed, but benzotriazole is irritating to the eye and is therefore expected to be irritating to the respiratory tract, a maximum concentration at the workplace (MAK value) cannot be derived. In a reproductive toxicity study with exposure of rats to benzotriazole, at 300 mg/kg body weight and day the body weight of pups is reduced during lactation. Teratogenicity was not examined. Skin contact is expected to contribute significantly to systemic toxicity. Therefore, benzotriazole is designated with an “H”. Limited data show no sensitization
Luis A. Kluth - One of the best experts on this subject based on the ideXlab platform.
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psychometric validation of a German Language version of a prom for urethral stricture surgery and preliminary testing of supplementary ed and ui constructs
World Journal of Urology, 2016Co-Authors: Luis A. Kluth, Marianne Schmid, Armin Soave, Tim Ludwig, Natalie Christ, Michael Rink, Roland Dahlem, Clemens M. Rosenbaum, Andreas Becker, Philip ReissAbstract:Purpose To validate a German Language version of the patient-reported outcome measurement (PROM) following urethral stricture surgery (USS) in a cohort of men undergoing one-stage buccal mucosa graft urethroplasty (BMGU) for urethral stricture. Furthermore, to explore the responsiveness of erectile function (EF) and urinary incontinence (UI) constructs in the context of this intervention.
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psychometric validation of a German Language version of a prom for urethral stricture surgery and preliminary testing of supplementary ed and ui constructs
World Journal of Urology, 2016Co-Authors: Luis A. Kluth, Marianne Schmid, Armin Soave, Tim Ludwig, Natalie Christ, Michael Rink, Roland Dahlem, Clemens M. Rosenbaum, Andreas Becker, Philip ReissAbstract:To validate a German Language version of the patient-reported outcome measurement (PROM) following urethral stricture surgery (USS) in a cohort of men undergoing one-stage buccal mucosa graft urethroplasty (BMGU) for urethral stricture. Furthermore, to explore the responsiveness of erectile function (EF) and urinary incontinence (UI) constructs in the context of this intervention. The USS-PROM captures voiding symptoms (ICIQ-MLUTS) and health-related quality of life (HRQoL) (EQ-5D). To evaluate EF and UI, the IIEF-5 and ICIQ-UI SF were included. Between March 2012 and April 2013, all patients undergoing BMGU at our institution were prospectively enrolled in this study. Psychometric assessment included internal consistency, test–retest reliability, criterion validity and responsiveness. Ninety-three men completed the USS-PROM before and 3 months after surgery, with 40 (43 %) also completing the USS-PROM 6 months after surgery to assess reliability. Internal consistency: for the ICIQ-MLUTS, Cronbach’s α was 0.83. The test–retest intraclass correlation coefficient was 0.94. There was a negative correlation between change in ICIQ-MLUTS total score and change in Q max (r = −0.40). All values exceeded our predefined thresholds. Significant improvements of voiding symptoms and HRQoL demonstrate responsiveness to change (all p values 0.05), IIEF-5 scores improved significantly (p = 0.048). The German Language USS-PROM shows similar psychometric properties to the English Language version. This instrument can be improved by assessing EF by the use of IIEF-5. Further studies with larger patient cohorts are needed to evaluate the significance of measuring UI in urethroplasty patients.
Harald Dyckhoff - One of the best experts on this subject based on the ideXlab platform.
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coverage of business administration literature in google scholar analysis and comparison with econbiz scopus and web of science
Bibliometrie - Praxis und Forschung, 2013Co-Authors: Marcel Clermont, Harald DyckhoffAbstract:Google Scholar is used for literature research as well as for evaluations of research performance. To establish Google Scholar’s functional compliance, we generate a heuristic method and apply it to business relevant journals, namely those ascertained and rated in the German business journal rank- ing VHB-JOURQUAL2 by Schrader/Hennig-Thurau (2009). It is shown that Google Scholar primarily indexes international, i.e. English-Language journals with a high rating grade; national Language, here German-Language literature, is hardly covered systematically. Furthermore, we compare these results with the business journal content of the German database EconBiz and the international databases Web of Science and Scopus. While Google Scholar is definitely competitive with Web of Science and Scopus for English-Language literature, German-Language literature is systematically covered by EconBiz, only. The comparison is additionally done for special business research fields. With regard to the journal coverage of some of these research areas, it becomes evident that the national database EconBiz even dominates the databases Scopus and Web of Science. Recommended citation: Clermont, M. & Dyckhoff, H. (2012), Coverage of Business Administration Literature in Google Scholar: Analysis and Comparison with EconBiz, Scopus and Web of Science. Bibliometrie - Praxis und Forschung 1, 5. URN:urn:nbn:de:bvb:355-bpf-165-5.
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coverage of business administration literature in google scholar analysis and comparison with econbiz scopus and web of science
Social Science Research Network, 2012Co-Authors: Marcel Clermont, Harald DyckhoffAbstract:Google Scholar is used for literature research as well as for evaluations of research performance. To establish Google Scholar’s functional compliance we generate a heuristic method and apply it to business relevant journals, namely those ascertained and rated in VHB-JOURQUAL2 by Schrader/Hennig-Thurau (2009). This is done separately both for single rating categories and for special business research fields. It is shown that Google Scholar primarily indexes international, i.e. English-Language journals with a high JOURQUAL rating; German-Language literature is hardly covered systematically. In addition, we compare these results with the business journal content of EconBiz, Scopus and Web of Science. While Google Scholar is definitely competitive with Web of Science and Scopus for English-Language literature, German-Language literature is systematically covered by EconBiz, only. With regard to the journal coverage of some research areas, it becomes evident that EconBiz even dominates the databases Scopus and Web of Science.A shortened version of this paper with other figures is published in Bibliometrie - Praxis und Theorie.
