Nine Revived Records to the Flora of Egypt

Specimens of Asclepias flavida N.E.Br. (Asclepiadaceae), Boscia salicifolia Oliv. (Capparaceae), Cicer arietinum L. (Leguminosae-Papilionoideae), Euphorbia nutans Lag. (Euphorbiaceae), Lepidium virginicum L. (Cruciferae), Oldenlandia fasatigiata Bremek. var. fastigiata, Oldenlandia hedyotoides (Fish. & Mey.) Boiss. (Rubiaceae), Premna resinosa Schauer (Verbenaceae) and Vernonia cinerascens Schultz Bip. (Compositae), collected from Egypt, were located in the two herbaria CAI and CAIM. All nine species were mentioned in earlier floristic treatments, unpublished lists and accounts of excursions carried out in the 1930’s, but were overlooked in subsequent floristic works. The present article revives therecording of the nine species

Dizajniranje i sinteza novih derivata tiofenkarbohidrazida, tienopirazola i tienopirimidina s antioksidativnim i antitumorskim djelovanjem

2-Amino-5-acetyl-4-methyl-thiophene-3-carboxylic acid ethyl ester (1) and 5-acetyl-2-amino-4-methylthiophene-3-carbohydrazide (2) were synthesized and used as starting materials for the synthesis of new series of 1-(5-amino-4-(3,5-dimethyl-1H-pyrazole-1-carbonyl)-3-methylthiophen-2-yl) ethanone (3a), 1-(5-amino-4-(4-chloro-3,5-dimethyl-1H-pyrazole-1-carbonyl)-3-methylthiophen-2-yl) ethanone (3b), 1-(4-methyl-2-amino-5-acetylthiophene-3-carbonyl) pyrazolidine-3,5-dione (4), (Z)-N\u27-(4-methyl-2-amino-5-acetylthiophene-3-carbonyl) formohydrazonic acid (5a), (Z)-ethyl-N\u27-(4-methyl-2-amino-5-acetylthiophene-3-carbonylformo hydrazonate (5b), 6-acetyl-3-amino-2,5-dimethylthieno2,3-dpyrimidin-4(3H)-one (8), 5-methyl-3-amino-2-mercapto-6-acetylthieno2,3-dpyrimidin-4(3H)-one (10) and 5-methyl-6-acetyl-2-thioxo-2,3-dihydrothieno2,3-dpyrimidin-4(1H)-one (12) as potential antioxidant and antitumor agents. Pharmacological results showed that compounds 6a, 6b, 8, 10 and 12 exhibited promising antitumor and antioxidant activity.Etilni ester 2-amino-5-acetil-4-metil-tiofen-3-karboksilne kiseline (1) i 5-acetil-2-amino-4-metiltiofen-3-karbohidrazid (2) sintetizirani su i upotrebljeni kao reaktanti u sintezi novih spojeva 1-(5-amino-4-(3,5-dimetil-1H-pirazol-1-karbonil)-3-metiltiofen-2-il) etanona (3a), 1-(5-amino-4-(4-klor-3,5-dimetil-1H-pirazol-1-karbonil)-3-metiltiofen-2-il) etanona (3b), 1-(4-metil-2-amino-5-acetiltiofen-3-karbonil) pirazolidin-3,5-diona (4), (Z)-N\u27-(4-metil-2-amino-5-acetiltiofen-3-karbonil) formohidrazonske kiseline (5a), (Z)-etil-N\u27-(4-metil-2-amino-5-acetiltiofen-3-karbonilformo hidrazonata (5b), 6-acetil-3-amino-2,5-dimetiltieno2,3-dpirimidin-4(3H)-one (8), 5-metil-3-amino-2-merkapto-6-acetiltieno2,3-dpirimidin-4(3H)-ona (10) i 5-metil-6-acetil-2-tiokso-2,3-dihidrotieno2,3-dpirimidin-4(1H)-ona (12) kao potencijalnih antioksidansa i citostatika. Farmakološka ispitivanja ukazuju na to da spojevi 6a, 6b, 8, 10 i 12 imaju značajno antitumorsko i antioksidativno djelovanje

Synthesis, anti-Infammatory, Analgesic, Molecular Modeling and ADMET Studies of Novel Diclofenac Derivatives Containing Alanyl Moiety

The present work aims to synthesize novel diclofenac derivatives containing L-alanine moiety. The synthesized compounds docked into the active site to discover validated inhibitors of cyclooxygenases (COX-1 and COX-2). The calculations in-silico were predicted that, the compound with lowest energy of docked poses was interacted with residues of active site, perhaps could be making them possible selective inhibitors against (COX-2) and physiologically  active. The binding score of compound compared with reference drug, and show extensive interactions with the targets, which may consider it a suitable selective inhibitor against   (COX-2). Keywords: Alanine, Diclofenac, COX, DOCKING, ADMET

The Information Content of Earnings Announcements in Regulated and Deregulated Markets: The Case of the Airline Industry

Most of the accounting research examining the information content of earnings assumes a competitive market framework. Little research has been devoted to the value relevance of earnings announcements in regulated markets. This paper examines the information content of earnings releases under two economic conditions facing the airline industry: regulation and deregulation (i.e., competition). We hypothesize that in a deregulated (competitive) environment, there is greater competition, causing more risk and uncertainty for the investor in setting security prices. Therefore, earnings\u27 releases provide more useful information in resolving uncertainties and in formulating and revising the investor\u27s beliefs regarding future earnings and prices in deregulated than for regulated markets. Three critical event periods are examined: the regulation period (1973 - 1975), the transition period (1976 - 1978), and the deregulation period (1979 - 1981). A revaluation index (RI) and a standardized revaluation index (SRI) are used to examine the extent of airline stock price revaluation in response to quarterly accounting earnings releases during the three critical event periods. The results indicate that earnings announcements have value relevance in setting security prices in both regulated and deregulated market conditions. However, the level of the market revaluation to earnings releases is dependent on market structure. The market revaluation to earnings releases is greater in a deregulated (competitive) period than in a regulated one. This result confirms the hypothesis that earnings have more value relevance in competitive markets than in regulated ones. The findings of this research have direct implications for the level of accounting disclosure and the extent of financial reporting in a given market structure. Since financial reporting is a costly process, it becomes important to identify the circumstances under which the level of financial disclosure should be expanded or reduce

An Examination of the Determinants and Contents of Corporate Voluntary Disclosure of Management\u27s Responsibilities For Financial Reporting

The Sarbanes-Oxley Act (S-O Act) of 2002 requires principal officers to certify under oath to the veracity of information contained in SEC filings and opine on the effectiveness of the internal control system. This study examines the determinants and contents of corporate voluntary disclosure of management\u27s responsibilities during the five-year period preceding the S-O Act. We predict that the voluntary disclosure of management\u27s responsibilities for financial information signals certain incentives and characteristics of the reporting firm that are relevant to financial statement users and regulators. Consistent with our predictions, our findings reveal significant differences between issuing and non-issuing firms as to the effectiveness of an individual firm\u27s internal control system, access to capital markets, audit committee characteristics, and ownership structure. An empirical analysis of the contents of these assertions also reveals different areas of emphasis and selectivity by management, which represents an informative link to existing disclosure mandates. The results of this study contribute to our knowledge of management\u27s motivations for voluntary disclosure and lend credence to the mandatory certification requirements and related disclosure reforms established in the post-Enron era

Market Revaluations of Foreign Listings’ Reconciliations to U.S. Financial Reporting GAAP

The Securities and Exchange Commission (SEC) requires foreign firms wishing to list their securities on the U.S. exchanges to convert their financial statements to U.S.-based generally accepted accounting principles (GAAP) in a reconciliation filing known as Form 20-F. This paper extends prior research analyzing the importance of the SEC requirement by examining the value relevance to U.S. capital markets of Form 20-F reconciliation information under two additional hypotheses related to: i) investors\u27 anticipation of the reconciliation, and ii) investors\u27 perception of foreign countries\u27 enforcement and reliability in applying local accounting rules. We argue that the information content of the Form 20-F reconciliation data is preempted (at least partially) on the date of foreign earnings announcements because of investor anticipation of these reconciliations. Therefore, only significant unanticipated reconciliations exhibit value relevance on the date of filing. In addition, investor perception of the reliability of the reconciliations and the degree of confidence in foreign authorities enforcing local GAAP also affect the value relevance of the reconciliation data. We hypothesize that reconciliations made by firms from countries with mature and developed capital markets should be more value relevant to U.S. investors. Our results show that both unexpected foreign earnings and anticipated reconciliations to U.S. GAAP are significantly associated with unexpected market returns during the week of earnings announcements. The region of the foreign country is also significantly associated with market returns. However, unexpected reconciliations are not significantly associated with unexpected market returns during the week of Form 20-F filing

Simple approach to thieno[3,2-d]pyrimidines as new scaffolds of antimicrobial activities

6-(4-Chlorophenyl)-spiro[cyclohexane-1,2-thieno[3,2-d][1,3]oxazin]-4(1H)-one (1) was synthesized and used as a starting material for the synthesis of a novel series of spiro compounds having biologically active sulfonamide (2a-e) and 3-(4-acetylphenyl)-6-(4-chlorophenyl)-1H-spiro[cyclohexane-1,2-thieno[3,2-d]pyrimidine-4(3H)-one (3). Compound 2a was used as a key intermediate for the synthesis of sulfonyl carbothioamide derivatives (4a-c). Also, compound 3 was used as an intermediate for the synthesis of 3H-spiro[cyclohexane-1,2-thieno[3,2-d]pyrimidin]-3-yl]phenyl}-2-imino-4-(substituted phenyl and/or thienyl)-1,2-dihydropyridine-3-carbonitrile derivatives (5a-e), 3H-spiro[cyclohexane-1,2-thieno[3,2-d]pyrimidin]-3-yl]phenyl}-2-oxo-4-(substituted phenyl and/or thienyl)-1,2-dihydropyridine-3-carbonitrile derivatives (6a-e), and 4-[(2Z)-3-substituted-arylprop-2-enoyl]phenyl-1H-spiro[cyclohexane-1,2-thieno[3,2-d]pyrimidine derivatives (7a-e). Cyclocondensation of 7a-e with hydrazine hydrate produced 6-(4-chlorophenyl)-3-[4-(5-substituted aryl-4,5-dihydro-1H-pyrazol-3-yl)phenyl]-1H-spiro[cyclohexane-1,2-thieno-[3,2-d]pyrimidin]-4(3H)-ones (8a-e), but with hydroxylamine hydrochloride afforded the corresponding isoxazoline derivatives (9a-e). Also, cyclocondensation by thiourea afforded 2-thioxo-1,2-dihydropyrimidin-4-yl)-phenyl-spiro-{cyclohexanethieno[3,2-d]pyrimidin}-4-one derivatives (10a-e). The new compounds were investigated for antimicrobial activity. Compounds 2c, 8b, c, 9b and 10b were the most potent ones against both Gram-negative and Gram-positive bacteria. Compound 8c exhibited higher antifungal activity towards the examined fungi with MIC of 1–2 µmol mL–1 compared to ketoconazole (MIC 2–3 µmol mL–1)

Facile heterocyclic synthesis and antimicrobial activity of polysubstituted and condensed pyrazolopyranopyrimidine and pyrazolopyranotriazine derivatives

Reaction of 6-amino-3-methyl-4-(substituted phenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (1) with triethylorthoformate followed by treatment with hydrazine hydrate, formic acid, acetic acid, phenylisocyanate, ammonium thiocyanate and formamide afforded the corresponding pyranopyrimidine derivatives 2–6. Cyclocondensation of 1 with cyclohexanone afforded pyrazolopyranoquinoline 7. One-pot process of diazotation and de-diazochlorination of 1 afforded pyrazolopyranotriazine derivative 8, which upon treatment with secondary amines afforded 9 and 10a-c. Condensation of 2 with aromatic aldehyde gave the corresponding Schiff bases 11a,b, the oxidative cyclization of the hydrazone with appropriate oxidant afforded 11-(4-fluorophenyl))-2-(4-substitutedphenyl)-10-methyl-8,11-dihydropyrazolo-[4\u27,3\u27:5,6]pyrano[3,2-e][1,2,4]triazolo[1,5-c]pyrimidines (12a,b). Structures of the synthesized compounds were confirmed by spectral data and elemental analysis. All synthesized compounds were evaluated for antibacterial and antifungal activities compared to norfloxacin and fluconazole as standard drugs. Compounds 9, 10c, 12a and 15 were found to be the most potent antibacterial agents, with activity equal to that of norfloxacin. On the other hand, compound 5 exhibited higher antifungal activity compared to fluconazole

EFFECTS OF NANO CARBON AND NITROGEN FERTILIZATION ON GROWTH, LEAF MINERAL CONTENT, YIELD AND FRUIT QUALITY OF FLAME SEEDLESS GRAPE

This investigation was carried out through two successive seasons (2014 and 2015) to investigate the effects of nano-carbon and nitrogen fertilization levels on growth, leaf mineral content, yield and fruit quality of 3 years old flame seedless grapevines, cultivated in a private orchard with loamy soil texture, at Gharbiya Governorate. Ten treatments were applied as a randomized complete block design with three replications. The result indicated that 80%N from recommended requirment+0.6% carbon nano tubes (CNTs) increased significantly leaf area, fresh and dry weight, total carbohydrate% and concentration of N, P, K, Mg, and Fe in leaves, weight of 100 berries,  and juice weight of 100 berries compared with control. Also results showed that yield of combined application of 80% conventional fertilizer of nitrogen and nano-carbon at 0.6%was equal to that with supplied 100% conventional fertilizer (control). This indicated that the utilization rate of nitrogen fertilizer was increased after combined application of nano-carbon, which can save the N fertilizer amounts in production practice

EFFECT OF SPRAYING WASHINGTON NAVEL ORANGE TREES WITH SELENIUM ON VEGETATIVE GROWTH, PRODUCTIVITY AND FRUIT QUALITY

ve seasons, 2012 and 2013 in a private orchard in Barshom vallage located at El-Kalubia Governorate Egypt. Washington Navel Orange trees (Citrus Sinensis) budded on sour orange rootstock (Citrus aurantium, L.) were 7- years- old and planted at 5 x 5 meters under basin irrigation system. This investigation aimed to study the effect of selenium (Se) levels (0, 20, 40, 80 and 160 ppm)  as foliar spray on growth, yield, fruit quality, leaf mineral content and enzymes activity of Washington Navel orange trees. The obtained data showed that, selenium had a significant promotive effect on growth, yield, fruit quality, leaf mineral content and enzymes activity of Washington Navel orange trees. Results indicated that treatment of Se at 40 ppm gave the highest significant results, whereas, treatment 160 ppm gave the highest fruit selenium content