The flow of novel coronavirus (COVID-19) has affected almost every aspect of human life around th... more The flow of novel coronavirus (COVID-19) has affected almost every aspect of human life around the globe. Being the emerging ground and early sufferer of the virus, Wuhan city-data remains a case of multifold significance. Further, it is of notable importance to explore the impact of unique and unprecedented public health response of Chinese authorities-the extreme lockdown of the city. In this research, we investigate the statistical nature of the viral transmission concerning social distancing, extreme quarantine, and robust lockdown interventions. We observed highly convincing and statistically significant evidences in favor of quarantine and social distancing approaches. These findings might help countries, now facing, or likely to face the wave of the virus. We analyzed Wuhan-based data of "number of deaths" and "confirmed cases," extracted from China CDC weekly database, dated from February 13, 2020, to March 24, 2020. To estimate the underlying group structure, the assembled data is further subdivided into three blocks, each consists of two weeks. Thus, the complete data set is studied in three phases, such as, phase 1 (
The knowledge of variations in root canal morphology is critical for a successful endodontic trea... more The knowledge of variations in root canal morphology is critical for a successful endodontic treatment. This article presents the endodontic management of a unique case of mandibular molar with middle distal canal which is quite uncommon.
Collection of Czechoslovak Chemical Communications, 1991
2-amino-3-cyano-4H-phenyl-benzo[f]chromene (I) was reacted with formamide, acetic anhydride, and ... more 2-amino-3-cyano-4H-phenyl-benzo[f]chromene (I) was reacted with formamide, acetic anhydride, and ethyl cyanoacetate to produce compounds (II-IV), respectively. Compound IV reacted with HCONH2, POCl3 and P2S5 to produce corresponding pyrimidobenzochromene (V), chloropyridobenzochromene (VI) and mercaptopyridobenzochromene (VII). Compound VII reacted with α-halocompounds to produce corresponding S-alkylated derivatives (VIIIa to VIIIc), and compound (VI) reacted with different amines to produce corresponding alkyl amino-, or aryl aminopyridobenzochromene (IXa-IXc) but in using hydrazine hydrate, pyrazolopyridobenzochromene (X) was obtained.
Nov-Dec 1984 Synthesis of Fluorescent and Coloured Pyrylium and Pyridinium Salts Alan R. Katritzk... more Nov-Dec 1984 Synthesis of Fluorescent and Coloured Pyrylium and Pyridinium Salts Alan R. Katritzky*, Otto A. Schwarz, Abdu E. Abdel Rahman and David E. Leahy Department of Chemistry, University of Florida, Gainesville, FL 32611, USA Received April 6, 1984 The synthesis is described of fluorescent and coloured pyrylium and pyridinium salts, including water-soluble derivatives, designed to serve as marker reagents for primary amines. 1673 /. Heterocyclic Chem., 21, 1673 (1984). The transformation of pyrylium salts with primary amines to ...
The flow of novel coronavirus (COVID-19) has affected almost every aspect of human life around th... more The flow of novel coronavirus (COVID-19) has affected almost every aspect of human life around the globe. Being the emerging ground and early sufferer of the virus, Wuhan city-data remains a case of multifold significance. Further, it is of notable importance to explore the impact of unique and unprecedented public health response of Chinese authorities-the extreme lockdown of the city. In this research, we investigate the statistical nature of the viral transmission concerning social distancing, extreme quarantine, and robust lockdown interventions. We observed highly convincing and statistically significant evidences in favor of quarantine and social distancing approaches. These findings might help countries, now facing, or likely to face the wave of the virus. We analyzed Wuhan-based data of "number of deaths" and "confirmed cases," extracted from China CDC weekly database, dated from February 13, 2020, to March 24, 2020. To estimate the underlying group structure, the assembled data is further subdivided into three blocks, each consists of two weeks. Thus, the complete data set is studied in three phases, such as, phase 1 (
The knowledge of variations in root canal morphology is critical for a successful endodontic trea... more The knowledge of variations in root canal morphology is critical for a successful endodontic treatment. This article presents the endodontic management of a unique case of mandibular molar with middle distal canal which is quite uncommon.
Collection of Czechoslovak Chemical Communications, 1991
2-amino-3-cyano-4H-phenyl-benzo[f]chromene (I) was reacted with formamide, acetic anhydride, and ... more 2-amino-3-cyano-4H-phenyl-benzo[f]chromene (I) was reacted with formamide, acetic anhydride, and ethyl cyanoacetate to produce compounds (II-IV), respectively. Compound IV reacted with HCONH2, POCl3 and P2S5 to produce corresponding pyrimidobenzochromene (V), chloropyridobenzochromene (VI) and mercaptopyridobenzochromene (VII). Compound VII reacted with α-halocompounds to produce corresponding S-alkylated derivatives (VIIIa to VIIIc), and compound (VI) reacted with different amines to produce corresponding alkyl amino-, or aryl aminopyridobenzochromene (IXa-IXc) but in using hydrazine hydrate, pyrazolopyridobenzochromene (X) was obtained.
Nov-Dec 1984 Synthesis of Fluorescent and Coloured Pyrylium and Pyridinium Salts Alan R. Katritzk... more Nov-Dec 1984 Synthesis of Fluorescent and Coloured Pyrylium and Pyridinium Salts Alan R. Katritzky*, Otto A. Schwarz, Abdu E. Abdel Rahman and David E. Leahy Department of Chemistry, University of Florida, Gainesville, FL 32611, USA Received April 6, 1984 The synthesis is described of fluorescent and coloured pyrylium and pyridinium salts, including water-soluble derivatives, designed to serve as marker reagents for primary amines. 1673 /. Heterocyclic Chem., 21, 1673 (1984). The transformation of pyrylium salts with primary amines to ...
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