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Showing results 11537 to 11556 of 59765
  • Fabrication-and-characterization-of-PZT-string-based-MEMS-devices_2016_Journal-of-Science-Advanced-Materials-and-Devices.pdf.jpg
  • Article


  • Authors: D.T. Huong Giang; N.H. Duc; G. Agnus; T. Maroutian; P. Lecoeur (2016)

  • String based MEMS devices recently attract world technology development thanks to their advantages over cantilever ones. Approaching to this direction, the paper reports on the micro-fabrication and characterization of free-standing doubly clamped piezoelectric beams based on heterostructures of Pd/ FeNi/Pd/PZT/LSMO/STO/Si. The displacement of strings is investigated in both static and dynamic mode. The static response exhibits a bending displacement as large as 1.2 am, whereas the dynamic response shows a strong resonance with a high quality factor of around 35 depending on the resonant mode at atmospheric pressure. These findings are comparable with those observed in large dim...

  • 01050000335.pdf.jpg
  • Thesis


  • Authors: Nguyen, Thi Khanh Van;  Advisor: Ta, Dinh Canh (2011)

  • Tổng quan lý thuyết về pin mặt trời truyền thống và đặc biệt là về pin mặt trời sử dụng chất màu. Giới thiệu về vật liệu bán dẫn ZnO và một số nghiên cứu đã có về cấu trúc vùng năng lượng và tính chất quang. Trình bày các phương pháp kĩ thuật được sử dụng để chế tạo và khảo sát tính chất, hình thái học, cấu trúc của màng nano ZnO. Phân tích và khảo sát các kết quả thu được từ các phép đo phổ nhiễu xạ tia X (XRD), ảnh hiển vi điện tử truyền qua (SEM), phổ hấp thụ và truyền qua (UV-vis) và phổ huỳnh quang. Từ đó rút ra khẳng định về việc chế tạo thành công màng nano ZnO. Cuối cùng là phần kết luận và tài liệu tham khảo.

  • Fabrication-of-lithium-substituted-copper-ferrite-_2018_Journal-of-Science--.pdf.jpg
  • Article


  • Authors: Manikandan, V.; Singh, Monika; Yadav, B.C.; Denardin, Juliano C. (2018)

  • A Li-CuFe2O4thinfilm has a well-defined nanocrystalline structure with a crystallite size of ~17 nm. The TEM and SEM images of the Li-CuFe2O4thinfilm show a polyhedron shape of nanoparticles with uneven sizes, resulting in a significant change in its gas sensing characteristics such as sensitivity and sensor response. An optical analysis shows that the Li-CuFe2O4thinfilm has a semiconducting nature, and the band gap of the thinfilm is determined to be 1.15 eV. The gas sensor analysis demonstrates repeatability of the sensing behavior of the Li-CuFe2O4 thin film and this ensures a reliable and efficient gas sensor at room temperature.

  • 23-Nguyễn Thị Ngọc Lan, Nguyễn Thị Lan Hương.pdf.jpg
  • Article


  • Authors: Nguyễn, Thị Ngọc Lan; Nguyễn, Thị Lan Hương (2017)

  • Bài viết giới thiệu các tính năng của mạng xã hội Facebook với các đặc tính đáp ứng những yêu cầu của hoạt động thông tin thư viện, giúp người cung cấp thông tin và người dùng tin kết nối nhanh chóng

  • 4242-97-8273-1-10-20180320.pdf.jpg
  • Article


  • Authors: Nguyen, Xuan Sang; Luu, Thi Lan Anh; Tran, Thanh Thai; Phan, Trung Nghia; Vo, Thach Son (2018)

  • Polypyrrole (PPy) nanocomposites reinforced with zinc oxide (ZnO) nanorod and nano flower were fabricated by chemical oxidative polymerization method using an ammonium per-sulphate (APS, (NH4)2S2O8) as an oxidizing agent. The polymer nanocomposite were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR). The results were compared with pure as-prepared PPy. The SEM images of the nanocomposites show homogeneous dispersion characteristics and different morphologies of ZnO structures such as rod and flower-like shapes. In the FTIR spectra, composite samples showed characteristic peaks of PPy shifted to higher positions co...

  • Facile-combustion-based-engineering-of-novel-white-light-emitting-Zn2TiO4-Dy3-nanophosphors-for-display-and-forensic-applications_2017_Journal-of-Scie.pdf.jpg
  • Article


  • Authors: Girish, K.M.; Prashantha, S.C.; Nagabhushana, H. (2017)

  • Nanomaterialsfind a wide range of applications in surface based nanoscience and technology. To pass high backward encumbrance, low sensitivity, complicated setup and poor universality in traditional methods for the enhancement of latentfingerprints and display applications, we explored the super-structures of dysprosium (Dy3+) doped Zn2TiO4via a facile solution combustion route. This method offers new potentials in surface-based science comprising display, latentfingerprint, and luminescent ink for anticounterfeiting applications. The characteristic emissions of intra-4f shell Dy3+ cations in blue, yellow and red regions corresponding to 4F9/2 to 6H15/2, 6H13/2, and 6H11/2transitions ...

  • Facile fabrication, characterization and efficient photocatalytic activity of surfactant free ZnS, CdS and CuS nanoparticles.pdf.jpg
  • Article


  • Authors: Ayodhya, Dasari; Veerabhadram, Guttena (2019)

  • In this research, some metal sulfide nanoparticles (NPs) including ZnS, CdS and CuS NPs were prepared by a simple and low-cost co-precipitation method for the photocatalytic degradation of Bromothymol blue dye (BTB) under natural sunlight irradiation. The synthesized materials were characterized by XRD, FT-IR, UV-vis DRS, PL, TGA, SEM and TEM techniques for the investigation of structural, electronic, thermal, and morphological properties. The optical absorption and the band gaps of the ZnS, CdS, and CuS NPs were calculated as 3.62 eV, 2.21 eV, and 1.16 eV from the UV-vis DRS. XRD results demonstrate the cubic structure of ZnS NPs, CdS NPs, and the hexagonal structure of CuS NPs in th...

  • Facile sol-gel synthesis and enhanced photocatalytic activity of the V2O5-ZnO nanoflakes.pdf.jpg
  • Article


  • Authors: Shukla, Prakhar; Shukla, Jitendra Kumar (2019)

  • The structural, optical and photocatalytic properties of V2O5-ZnO nanoflakes are reported. A facile sol-gel method was employed for the synthesis of ZnO and V2O5-ZnO nanostructures. Structural characterizations revealed a flake-type structure of V2O5-ZnO obtained from ZnO nanorods. A decrease in the band gap from 3.28 eV for ZnO to 2.64 eV for V2O5-ZnO was observed by Ultraviolet (UV)-Visible spectroscopy. The V2O5-ZnO based photodegradation of methylene blue (MB) dye indicated that the anchoring of V2O5 in the ZnO composite improved the photocatalytic efficiency of the composite under irradiation of the visible light

  • 1-s2.0-S2468217918301527-main.pdf.jpg
  • Article


  • Authors: Shukla, Prakhar; Shukla, Jitendra Kumar (2018)

  • The structural, optical and photocatalytic properties of V2O5-ZnO nanoflakes are reported. A facile sol-gel method was employed for the synthesis of ZnO and V2O5-ZnO nanostructures. Structural characteriza-tions revealed aflake-type structure of V2O5-ZnO obtained from ZnO nanorods. A decrease in the band gap from 3.28 eV for ZnO to 2.64 eV for V2O5-ZnO was observed by Ultraviolet (UV)-Visible spectroscopy. The V2O5-ZnO based photodegradation of methylene blue (MB) dye indicated that the anchoring of V2O5 in the ZnO composite improved the photocatalytic efficiency of the composite under irradiation of the visible light

  • Facile solvothermal synthesis and functionalization of polyethylene glycol-coated paramagnetic Gd2(CO3)3 particles and corresponding Gd2O3 nanoparticles for use as MRI contrast agents.pdf.jpg
  • Article


  • Authors: Dougherty, Atika; Nasution, Erika L.Y.; Iskandar, Ferry; Dougherty, Geoff (2019)

  • Paramagnetic particles and nanoparticles have been widely used in bioimaging and biomedical applications. In this paper, functionalized gadolinium carbonate (Gd2(CO3)3) particles with polyethylene glycol (PEG) for use as an MRI contrast agent were produced. These PEGylated particles were also used as a single precursor for synthesizing Gd2O3 nanoparticles by a novel calcination pathway. The morphological, chemical, and structural properties of both the PEGylated Gd2(CO3)3 particles and Gd2O3 nanoparticles were examined using a scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and energy dispersive X-ray spectroscopy (EDS) techniques. After...

  • Facile-synthesis-of-MnWO4-BiOI-nanocomposites-and-the_2018_Journal-of-Scienc.pdf.jpg
  • Article


  • Authors: Raja, V. Ramasamy; Karthika, A.; Suganthi, A.; Rajarajan, M. (2018)

  • The novel MnWO4/BiOI nanocomposite materials were successfully synthesized by a precipitation deposition method. The as-prepared photocatalyst was characterized by XRD, SEM, EDAX, UV-DRS, FT-IR, TEM and BET techniques. The as-prepared MnWO4/BiOI nanocomposites were further utilized to study the degradation of the Celestin blue aqueous solution under visible-light irradiation. Absorption range and band gap energy, which are responsible for the observed photocatalyst behavior, were investigated by the DRS spectroscopy. The photocatalytic test suggested that MnWO4/BiOI nanocomposites possess a higher activity for the degradation of these pollutants than the pure BiOI and MnWO4under the v...

  • 1143.pdf.jpg
  • Book


  • Authors: Mobasheri, A.; Bondy, C.A.; Moley, K.; Mendes, A.F.; Carvalho Rosa, S.; Richardson, S.; Hoyland, J.A.; Barrett-Jolley, R.; Shakibaei, M. (2008)

  • Articular cartilage is a unique and highly specialized avascular connective tissue in which the availability of oxygen and glucose is significantly lower than synovial fluid and plasma. Glucose is an essential source of energy during embryonic growth and fetal development and is vital for mesenchymal cell differentiation, chondrogenesis, and skeletal morphogenesis. Glucose is an important metabolic fuel for differenti-ated chondrocytes during postnatal development and in adult articular cartilage and is a common structural precursor for the synthesis of extracellular matrix glycosaminoglycans. Glucose metabolism is critical for growth plate chondrocytes which participate in long bone ...

  • Dimension index method for climate change vulnerability assessment.pdf.jpg
  • Article


  • Authors: Huynh, Thi Lan Huong; Pathirana, Assela; Tran, Thuc (2012)

  • In this paper, we present the case study of Can Thocity (the biggest city in Mekong River Delta, Vietnam), faced with multiple future challenges, namely, (i) climate change driven sea-level rise and tidal effect, (ii) increased river runoff due to climate change, (iii) increased urban runoff driven by imperviousness and (iv) enhancement of extreme rainfall due to urban growth driven micro-climatic change (urban heat islands). A set of models were used to project the future impact of the combination of these influences. Urban growth of the city was projected using the landuse simulation model (Dinamica-EGO) to predict the future landuse up to 2100. The dynamic limited-ar...

  • 1144.pdf.jpg
  • Book


  • Authors: Bart, H.; Gohberg, I.; Ran, A.C.M.; Kaashoek, M.A. (2008)

  • The present book deals with factorization problems for matrix and operator functions. The problems originate from, or are motivated by, the theory of non-selfadjoint operators, the theory of matrix polynomials, mathematical systems and control theory, the theory of Riccati equations, inversion of convolution operators, theory of job scheduling in operations research. The book systematically employs a geometric principle of factorization which has its origins in the state space theory of linear input-output systems and in the theory of characteristic operator functions. This principle allows one to deal with different factorizations from one point of view. Covered are canonical factori...

  • Layout-articles-52572.pdf.jpg
  • Article


  • Authors: Do Huu, Hai (2015-09-28)

  • The development of a market economy, especially the financial markets is asking for transparency and truthfulness of the financial information with high quality. The information in the financial statements will impact directly and indirectly to the rights and decisions of investors. Independent auditors play a role of evaluating truthfulness and reasonable financial information in enterprises, however there are still risks. This study focuses on analyzing the factors affecting the quality of financial statements audit in enterprises. The analytical methods used in this study are: factor analysis method to explore and test the Cronbach's alpha coefficient for the construction and...

Browsing by Title

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 11537 to 11556 of 59765
  • Fabrication-and-characterization-of-PZT-string-based-MEMS-devices_2016_Journal-of-Science-Advanced-Materials-and-Devices.pdf.jpg
  • Article


  • Authors: D.T. Huong Giang; N.H. Duc; G. Agnus; T. Maroutian; P. Lecoeur (2016)

  • String based MEMS devices recently attract world technology development thanks to their advantages over cantilever ones. Approaching to this direction, the paper reports on the micro-fabrication and characterization of free-standing doubly clamped piezoelectric beams based on heterostructures of Pd/ FeNi/Pd/PZT/LSMO/STO/Si. The displacement of strings is investigated in both static and dynamic mode. The static response exhibits a bending displacement as large as 1.2 am, whereas the dynamic response shows a strong resonance with a high quality factor of around 35 depending on the resonant mode at atmospheric pressure. These findings are comparable with those observed in large dim...

  • 01050000335.pdf.jpg
  • Thesis


  • Authors: Nguyen, Thi Khanh Van;  Advisor: Ta, Dinh Canh (2011)

  • Tổng quan lý thuyết về pin mặt trời truyền thống và đặc biệt là về pin mặt trời sử dụng chất màu. Giới thiệu về vật liệu bán dẫn ZnO và một số nghiên cứu đã có về cấu trúc vùng năng lượng và tính chất quang. Trình bày các phương pháp kĩ thuật được sử dụng để chế tạo và khảo sát tính chất, hình thái học, cấu trúc của màng nano ZnO. Phân tích và khảo sát các kết quả thu được từ các phép đo phổ nhiễu xạ tia X (XRD), ảnh hiển vi điện tử truyền qua (SEM), phổ hấp thụ và truyền qua (UV-vis) và phổ huỳnh quang. Từ đó rút ra khẳng định về việc chế tạo thành công màng nano ZnO. Cuối cùng là phần kết luận và tài liệu tham khảo.

  • Fabrication-of-lithium-substituted-copper-ferrite-_2018_Journal-of-Science--.pdf.jpg
  • Article


  • Authors: Manikandan, V.; Singh, Monika; Yadav, B.C.; Denardin, Juliano C. (2018)

  • A Li-CuFe2O4thinfilm has a well-defined nanocrystalline structure with a crystallite size of ~17 nm. The TEM and SEM images of the Li-CuFe2O4thinfilm show a polyhedron shape of nanoparticles with uneven sizes, resulting in a significant change in its gas sensing characteristics such as sensitivity and sensor response. An optical analysis shows that the Li-CuFe2O4thinfilm has a semiconducting nature, and the band gap of the thinfilm is determined to be 1.15 eV. The gas sensor analysis demonstrates repeatability of the sensing behavior of the Li-CuFe2O4 thin film and this ensures a reliable and efficient gas sensor at room temperature.

  • 23-Nguyễn Thị Ngọc Lan, Nguyễn Thị Lan Hương.pdf.jpg
  • Article


  • Authors: Nguyễn, Thị Ngọc Lan; Nguyễn, Thị Lan Hương (2017)

  • Bài viết giới thiệu các tính năng của mạng xã hội Facebook với các đặc tính đáp ứng những yêu cầu của hoạt động thông tin thư viện, giúp người cung cấp thông tin và người dùng tin kết nối nhanh chóng

  • 4242-97-8273-1-10-20180320.pdf.jpg
  • Article


  • Authors: Nguyen, Xuan Sang; Luu, Thi Lan Anh; Tran, Thanh Thai; Phan, Trung Nghia; Vo, Thach Son (2018)

  • Polypyrrole (PPy) nanocomposites reinforced with zinc oxide (ZnO) nanorod and nano flower were fabricated by chemical oxidative polymerization method using an ammonium per-sulphate (APS, (NH4)2S2O8) as an oxidizing agent. The polymer nanocomposite were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR). The results were compared with pure as-prepared PPy. The SEM images of the nanocomposites show homogeneous dispersion characteristics and different morphologies of ZnO structures such as rod and flower-like shapes. In the FTIR spectra, composite samples showed characteristic peaks of PPy shifted to higher positions co...

  • Facile-combustion-based-engineering-of-novel-white-light-emitting-Zn2TiO4-Dy3-nanophosphors-for-display-and-forensic-applications_2017_Journal-of-Scie.pdf.jpg
  • Article


  • Authors: Girish, K.M.; Prashantha, S.C.; Nagabhushana, H. (2017)

  • Nanomaterialsfind a wide range of applications in surface based nanoscience and technology. To pass high backward encumbrance, low sensitivity, complicated setup and poor universality in traditional methods for the enhancement of latentfingerprints and display applications, we explored the super-structures of dysprosium (Dy3+) doped Zn2TiO4via a facile solution combustion route. This method offers new potentials in surface-based science comprising display, latentfingerprint, and luminescent ink for anticounterfeiting applications. The characteristic emissions of intra-4f shell Dy3+ cations in blue, yellow and red regions corresponding to 4F9/2 to 6H15/2, 6H13/2, and 6H11/2transitions ...

  • Facile fabrication, characterization and efficient photocatalytic activity of surfactant free ZnS, CdS and CuS nanoparticles.pdf.jpg
  • Article


  • Authors: Ayodhya, Dasari; Veerabhadram, Guttena (2019)

  • In this research, some metal sulfide nanoparticles (NPs) including ZnS, CdS and CuS NPs were prepared by a simple and low-cost co-precipitation method for the photocatalytic degradation of Bromothymol blue dye (BTB) under natural sunlight irradiation. The synthesized materials were characterized by XRD, FT-IR, UV-vis DRS, PL, TGA, SEM and TEM techniques for the investigation of structural, electronic, thermal, and morphological properties. The optical absorption and the band gaps of the ZnS, CdS, and CuS NPs were calculated as 3.62 eV, 2.21 eV, and 1.16 eV from the UV-vis DRS. XRD results demonstrate the cubic structure of ZnS NPs, CdS NPs, and the hexagonal structure of CuS NPs in th...

  • Facile sol-gel synthesis and enhanced photocatalytic activity of the V2O5-ZnO nanoflakes.pdf.jpg
  • Article


  • Authors: Shukla, Prakhar; Shukla, Jitendra Kumar (2019)

  • The structural, optical and photocatalytic properties of V2O5-ZnO nanoflakes are reported. A facile sol-gel method was employed for the synthesis of ZnO and V2O5-ZnO nanostructures. Structural characterizations revealed a flake-type structure of V2O5-ZnO obtained from ZnO nanorods. A decrease in the band gap from 3.28 eV for ZnO to 2.64 eV for V2O5-ZnO was observed by Ultraviolet (UV)-Visible spectroscopy. The V2O5-ZnO based photodegradation of methylene blue (MB) dye indicated that the anchoring of V2O5 in the ZnO composite improved the photocatalytic efficiency of the composite under irradiation of the visible light

  • 1-s2.0-S2468217918301527-main.pdf.jpg
  • Article


  • Authors: Shukla, Prakhar; Shukla, Jitendra Kumar (2018)

  • The structural, optical and photocatalytic properties of V2O5-ZnO nanoflakes are reported. A facile sol-gel method was employed for the synthesis of ZnO and V2O5-ZnO nanostructures. Structural characteriza-tions revealed aflake-type structure of V2O5-ZnO obtained from ZnO nanorods. A decrease in the band gap from 3.28 eV for ZnO to 2.64 eV for V2O5-ZnO was observed by Ultraviolet (UV)-Visible spectroscopy. The V2O5-ZnO based photodegradation of methylene blue (MB) dye indicated that the anchoring of V2O5 in the ZnO composite improved the photocatalytic efficiency of the composite under irradiation of the visible light

  • Facile solvothermal synthesis and functionalization of polyethylene glycol-coated paramagnetic Gd2(CO3)3 particles and corresponding Gd2O3 nanoparticles for use as MRI contrast agents.pdf.jpg
  • Article


  • Authors: Dougherty, Atika; Nasution, Erika L.Y.; Iskandar, Ferry; Dougherty, Geoff (2019)

  • Paramagnetic particles and nanoparticles have been widely used in bioimaging and biomedical applications. In this paper, functionalized gadolinium carbonate (Gd2(CO3)3) particles with polyethylene glycol (PEG) for use as an MRI contrast agent were produced. These PEGylated particles were also used as a single precursor for synthesizing Gd2O3 nanoparticles by a novel calcination pathway. The morphological, chemical, and structural properties of both the PEGylated Gd2(CO3)3 particles and Gd2O3 nanoparticles were examined using a scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and energy dispersive X-ray spectroscopy (EDS) techniques. After...

  • Facile-synthesis-of-MnWO4-BiOI-nanocomposites-and-the_2018_Journal-of-Scienc.pdf.jpg
  • Article


  • Authors: Raja, V. Ramasamy; Karthika, A.; Suganthi, A.; Rajarajan, M. (2018)

  • The novel MnWO4/BiOI nanocomposite materials were successfully synthesized by a precipitation deposition method. The as-prepared photocatalyst was characterized by XRD, SEM, EDAX, UV-DRS, FT-IR, TEM and BET techniques. The as-prepared MnWO4/BiOI nanocomposites were further utilized to study the degradation of the Celestin blue aqueous solution under visible-light irradiation. Absorption range and band gap energy, which are responsible for the observed photocatalyst behavior, were investigated by the DRS spectroscopy. The photocatalytic test suggested that MnWO4/BiOI nanocomposites possess a higher activity for the degradation of these pollutants than the pure BiOI and MnWO4under the v...

  • 1143.pdf.jpg
  • Book


  • Authors: Mobasheri, A.; Bondy, C.A.; Moley, K.; Mendes, A.F.; Carvalho Rosa, S.; Richardson, S.; Hoyland, J.A.; Barrett-Jolley, R.; Shakibaei, M. (2008)

  • Articular cartilage is a unique and highly specialized avascular connective tissue in which the availability of oxygen and glucose is significantly lower than synovial fluid and plasma. Glucose is an essential source of energy during embryonic growth and fetal development and is vital for mesenchymal cell differentiation, chondrogenesis, and skeletal morphogenesis. Glucose is an important metabolic fuel for differenti-ated chondrocytes during postnatal development and in adult articular cartilage and is a common structural precursor for the synthesis of extracellular matrix glycosaminoglycans. Glucose metabolism is critical for growth plate chondrocytes which participate in long bone ...

  • Dimension index method for climate change vulnerability assessment.pdf.jpg
  • Article


  • Authors: Huynh, Thi Lan Huong; Pathirana, Assela; Tran, Thuc (2012)

  • In this paper, we present the case study of Can Thocity (the biggest city in Mekong River Delta, Vietnam), faced with multiple future challenges, namely, (i) climate change driven sea-level rise and tidal effect, (ii) increased river runoff due to climate change, (iii) increased urban runoff driven by imperviousness and (iv) enhancement of extreme rainfall due to urban growth driven micro-climatic change (urban heat islands). A set of models were used to project the future impact of the combination of these influences. Urban growth of the city was projected using the landuse simulation model (Dinamica-EGO) to predict the future landuse up to 2100. The dynamic limited-ar...

  • 1144.pdf.jpg
  • Book


  • Authors: Bart, H.; Gohberg, I.; Ran, A.C.M.; Kaashoek, M.A. (2008)

  • The present book deals with factorization problems for matrix and operator functions. The problems originate from, or are motivated by, the theory of non-selfadjoint operators, the theory of matrix polynomials, mathematical systems and control theory, the theory of Riccati equations, inversion of convolution operators, theory of job scheduling in operations research. The book systematically employs a geometric principle of factorization which has its origins in the state space theory of linear input-output systems and in the theory of characteristic operator functions. This principle allows one to deal with different factorizations from one point of view. Covered are canonical factori...

  • Layout-articles-52572.pdf.jpg
  • Article


  • Authors: Do Huu, Hai (2015-09-28)

  • The development of a market economy, especially the financial markets is asking for transparency and truthfulness of the financial information with high quality. The information in the financial statements will impact directly and indirectly to the rights and decisions of investors. Independent auditors play a role of evaluating truthfulness and reasonable financial information in enterprises, however there are still risks. This study focuses on analyzing the factors affecting the quality of financial statements audit in enterprises. The analytical methods used in this study are: factor analysis method to explore and test the Cronbach's alpha coefficient for the construction and...