4,109 research outputs found
Replication Data for: Firm Value Adjustment Speed through Financial Friction in the Presence of Earnings Management and Productivity Growth: Evidence from Emerging Economies
No full textReplication Data for: Firm Value Adjustment Speed through Financial Friction in the Presence of Earnings Management and Productivity Growth: Evidence from Emerging Economie
Development of ergosterol, microbial biomass C, N, and P after steaming as a result of sucrose addition, and Sinapis alba cultivation
No full textA pot experiment was carried out to monitor the recovery of a steaming-reduced microbial biomass (C, N, and P) and fungal ergosterol by sucrose addition. The second objective was to investigate the recovery of a steaming-reduced microbial biomass by white mustard (Sinapis alba) cultivation and its interactions with microbial residues, freshly formed from sucrose addition. Thirty days after steaming, the soil microbial biomass C and N was still significantly reduced by 80%, leading to a rather constant microbial biomass C/N ratio around 7 throughout the experiment. The steaming-induced decreases of microbial biomass P and ergosterol were only roughly 50%, leading to a decrease in the microbial biomass C/P ratio and an increase in the ergosterol-to-microbial biomass C ratio. Sucrose addition led to a 25% reduction in the ergosterol-to-microbial biomass C ratio. Mustard cultivation had significant positive effects on microbial biomass C, N, P, and ergosterol, but the effects were smaller than those of sucrose addition. Cultivating mustard had no significant effects on the C loss or on the incorporation of sucrose C into the microbial biomass. In contrast, the application of sucrose led to a significant decrease in the mustard shoot biomass and especially in the mustard root biomass.Alexander von Humboldt Foundation (AvH
Optimisation of amino sugar quantification by HPLC in soil and plant hydrolysates
Get PDFAmino sugars are increasingly used as indicators for the accumulation of microbial residues in soil and plant material. A reverse-phase high-performance liquid chromatography method was improved for the simultaneous determination of muramic acid, mannosamine, glucosamine and galactosamine in soil and plant hydrolysates via ortho-phthaldialdehyde (OPA) pre-column derivatisation and fluorescence detection. The retention time was reduced, and the separation of muramic acid and mannosamine was optimised by modifying the mobile phase. The effects of excitation wavelength, OPA reaction time, tetrahydrofuran concentration and pH value of the mobile phase on the amino sugar separation were tested. Quantification limits were in the range of 0.13 to 0.90 mu g ml(-1). No interferences exist from amino acids or other primary amines, occurring in soil and plant hydrolysates.German Research Foundation (DFG
Interactions of mustard plants and soil microorganisms after application of sugarcane filter cake and pea residues to an Andosol
No full textIn a pot experiment using a strongly P-fixing Andosol from Nicaragua, the effects of sugarcanefilter cake application on the growth of white mustard (Sinapis alba L.) were compared with those of 13C-labeled pea residues. The application of pea residues led to a 50% increase and the application of filter cake to a 30% decrease in soil organic matterderived microbial biomass C compared with the control. In contrast, the application of filter cake resulted in a four times higher content of substrate-derived microbial biomass C than that of pea residues. The application of organic substrates generally increased microbial biomass N. Mustard growth led to significant increases in microbial biomass P in the control, but also in the organic-amendment treatments, which always resulted in decreased microbial biomass C : P ratios. Mustard growth also led to increased contents of Bray-1-extractable P, but this increase was only significant in the filter cake treatment. The application of pea residues had no effect on the yield of shoot C, but a positive effect on the yield of root C in comparison with the nonamended control. In contrast, the application of filter cake significantly depressed yields of shoot C and root C, due to N immobilization, presumably due to the high concentration of lignin.Alexander von Humboldt Foundation; DAA
Emirs of Uzbek Khan and Janibek Khan
No full textThis article explores the question about the origin of the Golden Horde emirs’ dynasties during the reign of Uzbek and Janibek khan. Based on numerous Venetian, Arabic, Turkish, Persian primary sources the author provides his own version of origin and genealogical relationships of various emirs. Based on a list of emirs of Janibek khan from «Daftar-i Chingiz-name», the author traces the origins of Mogul-buga to Kipchak tribe and the origins of Kutlu buga to Naiman tribe. Author argues that during the reign of Uzbek khan, the Kungirat and Kiyat were the most influential clans. The Kipchak and Nayman were the most influential clans during the reign of Janibek khan. The author considers three-level hierarchy of emirs. The first level includes the emirs – clan rulers in every district (ulus). There were 4 tribes in each ulus. The second level includes the emirs who were the rulers of ulus. After the administrative reform of Uzbek khan, they replaced the Jochids in the political system of the Golden Horde. If formerly the governance of ulus was inherited by one of the Jochids, then during the reign of Uzbek khan emirs were appointed directly from the center. The third level includes four Karachi Beys who were advisers of the khan. The author also examines the origin of Nanguday from Kungirat clan. The author puts forward his own version of a genealogy of Nanguday. Additionally, this article contains the author’s assumptions about biography of Isatay Kiyat and Isa Uysun. According to these assumptions, Isatay Kiyat can be identified with well-known Gourgen Isa. And Isa Uysun, in turn, can be identified with the brother of Tuluk Timur, who was a governor of the Crimea in the era of Uzbek khan
A conversation with Ausma Zehanat Khan
No full textAusma Zehanat Khan is a multi-award-winning author of crime and fantasy fiction that features Muslim protagonists and Islamic cultural milieus. Her work also engages with a wide range of contemporary global issues including genocide, terrorism, police violence, and refugee crossings. To date she has published 12 novels, which include two mystery series and the fantasy series The Khorasan Archives. Her first novel, The Unquiet Dead, which opens her Khattak/Getty crime series, was the winner of the Barry Award, the Arthur Ellis Award, and the Romantic Times Award for Best First Novel. Her latest crime series is set in Colorado and introduces us to a new detective who is female and Muslim. In this interview, Khan discusses the influence of her Pashtun roots and her work as an international human rights lawyer on her writing, the importance of diverse characters in genre fiction, the challenges of “translation” in the process of publishing and marketing books, and the global nature of her chosen genres
FIGURE 7 in Appearances often deceive in racerunners: integrative approach reveals two new species of Eremias (Squamata: Lacertidae) from Pakistan
No full textFIGURE 7. (A) The type locality of Eremias rafiqi sp. nov. near Tanishpa village, Torghar Mountains, Killa Saifullah district, Balochistan; (B) Eremias rafiqi sp. nov. from Kunder, Torghar Mountains, Killa Saifullah district, Balochistan; (C) The paratype of E. rafiqi sp. nov. (PMNH 4056) from under, Torghar Mountains, Killa Saifullah district, Balochistan; (D) The type locality of Eremias killasaifullahi sp. nov. near Kunder, Torghar Mountains, Killa Saifullah district, Balochistan; (E) The holotype of E. killasaifullahi sp. nov. (PMNH 3613) from Kunder, Torghar Mountains, Killa Saifullah district, Balochistan; (F) Eremias killasaifullahi sp. nov. from Tanishpa.Published as part of Masroor, Rafaqat, Khan, Muazzam Ali, Nadeem, Muhammad Sajid, Amir, Shabir Ali, Khisroon, Muhammad & Jablonski, Daniel, 2022, Appearances often deceive in racerunners: integrative approach reveals two new species of Eremias (Squamata: Lacertidae) from Pakistan, pp. 55-87 in Zootaxa 5175 (1) on page 76, DOI: 10.11646/zootaxa.5175.1.3, http://zenodo.org/record/700322
HERStory Makers 2022: Shazray Khan
No full textShazray Khan is a PhD candidate at the Atlantic Technological University studying Lean Six Sigma systems in management. She took part in HERStory Makers 2022.What is HERStory Makers?HERStory Makers is a social media competition for female-identifying early career researchers to share their research, their career journeys, and to inspire the next generation. Winners are selected by public vote. HERStory Makers is also part of EXPLORATHON, Scotland's contribution to European Researchers' Night.In 2022-23, EXPLORATHON was supported by the Engineering & Physical Sciences Research Council [grant number EP/X020894/1].Author contributions to contentShazray Khan conceived, planned, and recorded the video content. Kirsty Ross edited the video content to insert HERStory Maker credits, add subtitles, and maintain video length below Twitter/X limit of 2 mins and 20 secs, prior to scheduling the social media posts.</p
Sources of heavy metals and their long-term effects on microbial C, N and P relationships in soil
No full textThe effects of heavy metals (Zn, Pb, and Cu) on microbial biomass C, N, and P were assessed in soils contaminated over a wide range by sewage sludge, exhaust dust deposition of a lead factory and river sediments of mining residues. Microbial biomass C, N, and P did not show any clear heavy metal effect related to soil dry weight. Also the ratios of microbial biomass C/N and biomass C/P remained unaffected by heavy metals. The ratios of microbial biomass C/soil organic C, biomass N/total N, and biomass P/total P were all negatively affected by increasing concentrations of Zn, Pb, and Cu as detected by a source-specific analysis of covariance using the different heavy metal fractions as covariate. Negative effects of Zn on the ratios microbial biomass C/soil organic C and biomass N/total N increased with increasing metal solubility in the order: (X-ray fluorescence analysis) XFA-detectable < HNO3 < EDTA << NH4NO3-extractable Zn. The Zn effects on the microbial biomass N/total N were always smaller than those on the microbial biomass C/soil organic C ratio. The same was true for all effects of the Pb and Cu fractions on these two ratios. For this reason, the deposition of highly soluble Zn and Pb by exhaust dust has the most negative effects, although sediments contained the maximum total burden of Zn and Pb. All fractions of Zn, Pb, and Cu had similar negative effects on the microbial biomass P/total P ratio, although the NH4NO3-extractable fraction again showed the most pronounced effects
Recommended from our members
Rangeland Development in Dera Ghazi Khan, Pakistan
No full textThe first attempt at scientific management of rangelands ini Dera Ghazi Khan, Pakistan, was made in 1960. However, the efforts failed to yield good results, and the area, being extremely arid, was declared unsuitable for range improvement (GOWP 1970). The senior author surveyed the area and prepared another range management project for the area in 1982. Range improvement techniques were designed keeping in view the local ecological conditions. The results obtained so far are very encouraging. The story of failure and success of range improvements in D. G. Khan is presented here for the benefit of the readers.This material was digitized as part of a cooperative project between the Society for Range Management, the National Agricultural Library, and the University of Arizona Libraries.The Rangelands archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform March 202
- …
