OKONOGI, Takashi: search on Z-Library

The world's largest scientific articles store. 70,000,000+ articles for free.

Don't use scam websites

1

Detoxification by persimmon tannin of snake venoms and bacterial toxins

Takashi Okonogi, Zenpachiro Hattori, Akira Ogiso, Seiji Mitsui

Journal:

Year:

1979

Language:

english

File:

PDF, 224 KB

english, 1979

2

BRCA2 germline mutations in Japanese breast cancer families

Rie Inoue, Toshikazu Ushijima, Takashi Fukutomi, Atsuo Fukami, Haruhiko Sugimura, Shingo Inoue, Hideo Okonogi, Takashi Sugimura, Yoshiro Matsumoto, Minako Nagao

Journal:

International Journal of Cancer

Year:

1997

Language:

english

File:

PDF, 125 KB

english, 1997

3

ChemInform Abstract: Optically Active Antifungal Azoles. Part 10. Synthesis and Antifungal Activity of N-[4-(Azolyl)phenyl]- and N-[4-(Azolylmethyl)phenyl]-N′- [(1R,2R)-2-(2,4-difluorophenyl)-2-hydroxy-1-methyl-3- (1H-1,2,4-triazol-1-yl)propyl]azolones.

Tomoyuki Kitazaki, Takashi Ichikawa, Akihiro Tasaka, Hiroshi Hosono, Yoshihiro Matsushita, Ryogo Hayashi, Kenji Okonogi, Katsumi Itoh

Journal:

Year:

2001

File:

PDF, 34 KB

2001

4

ChemInform Abstract: Optically Active Antifungal Azoles. Part 12. Synthesis and Antifungal Activity of the Water-Soluble Prodrugs of 1-[(1R,2R)-2-(2,4-Difluorophenyl)-2-hydroxy-1-methyl-3- (1H-1,2,4-triazol-1-yl)propyl]-3- [4-(1H-1-tetrazolyl)phenyl]-2-imidazolidinone.

Takashi Ichikawa, Tomoyuki Kitazaki, Yoshihiro Matsushita, Masami Yamada, Ryogo Hayashi, Masashi Yamaguchi, Yutaka Kiyota, Kenji Okonogi, Katsumi Itoh

Journal:

Year:

2002

File:

PDF, 30 KB

2002

5

Mutation, loss of heterozygosity, and recombination of the p53 gene in mouse forestomach tumors induced by 2-amino-3,4-dimethylimidazo[4,5-f]quinoline

Toshikazu Ushijima, Hiroshi Makino, Hideo Okonogi, Yoko Hosoya, Takashi Sugimura, Minako Nagao

Journal:

Molecular Carcinogenesis

Year:

1995

Language:

english

File:

PDF, 573 KB

english, 1995

6

Structures of isorugosin E and hirtellin B, dimeric hydrolyzable tannins having a trisgalloyl group

Takashi Yoshida, Tsutomu Hatano, Atallah F. Ahmed, Akira Okonogi, Takuo Okuda

Journal:

Year:

1991

Language:

english

File:

PDF, 797 KB

english, 1991

7

Induction of aberrant crypt foci in C57BL/6N mice by 2-amino-9H-pyrido [2,3-b]indole (AαC) and 2-amino-3,8-dimethylimidazo [4,5-f]quinoxaline (MeIQx)

Hideo Okonogi, Toshikazu Ushijima, Hidesuke Shimizu, Takashi Sugimura, Minako Nagao

Journal:

Year:

1997

Language:

english

File:

PDF, 2.22 MB

english, 1997

8

Effects of gender and species on spectra of mutation induced by 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine in the lacI transgene

Hideo Okonogi, Gregory R Stuart, Eriko Okochi, Toshikazu Ushijima, Takashi Sugimura, Barry W Glickman, Minako Nagao

Journal:

Mutation Research/Genetic Toxicology and Environmental Mutagenesis

Year:

1997

Language:

english

File:

PDF, 183 KB

english, 1997

9

The role of a low glomerular density and being overweight in the etiology of proteinuria in CKD patients without known glomerular diseases

Okamoto, Hidekazu, Kawamura, Tetsuya, Okonogi, Hideo, Tsuboi, Nobuo, Miyazaki, Yoichi, Yokoo, Takashi

Journal:

Clinical and Experimental Nephrology

Year:

2014

Language:

english

File:

PDF, 257 KB

english, 2014

10

Changes in Bone Mineral Density in Uterine Cervical Cancer Patients After Radiation Therapy

Okonogi, Noriyuki, Saitoh, Jun-ichi, Suzuki, Yoshiyuki, Noda, Shin-ei, Ohno, Tatsuya, Oike, Takahiro, Ohkubo, Yu, Ando, Ken, Sato, Hiro, Nakano, Takashi

Journal:

International Journal of Radiation Oncology*Biology*Physics

Year:

2013

Language:

english

File:

PDF, 836 KB

english, 2013

11

Establishment of Methylation-Sensitive-Representational Difference Analysis and Isolation of Hypo- and Hypermethylated Genomic Fragments in Mouse Liver Tumors

Toshikazu Ushijima, Keiichirou Morimura, Yoko Hosoya, Hideo Okonogi, Masae Tatematsu, Takashi Sugimura and Minako Nagao

Journal:

Proceedings of the National Academy of Sciences

Year:

1997

Language:

english

File:

PDF, 1.58 MB

english, 1997

12

Erratum to: The role of a low glomerular density and being overweight in the etiology of proteinuria in CKD patients without known glomerular diseases

Okamoto, Hidekazu, Kawamura, Tetsuya, Okonogi, Hideo, Tsuboi, Nobuo, Miyazaki, Yoichi, Yokoo, Takashi

Journal:

Clinical and Experimental Nephrology

Year:

2014

Language:

english

File:

PDF, 123 KB

english, 2014

13

HLA Class I Expression and Its Alteration by Preoperative Hyperthermo-Chemoradiation Therapy in Patients With Rectal Cancer

Sato, H., Suzuki, Y., Ide, M., Katoh, T., Noda, S., Ando, K., Oike, T., Yoshimoto, Y., Okonogi, N., Mimura, K., Asao, T., Kuwano, H., Takashi, N.

Journal:

International Journal of Radiation Oncology*Biology*Physics

Year:

2014

Language:

english

File:

PDF, 73 KB

english, 2014

14

Single-cell cloning and expansion of human induced pluripotent stem cells by a microfluidic culture device

Matsumura, Taku, Tatsumi, Kazuya, Noda, Yuichiro, Nakanishi, Naoyuki, Okonogi, Atsuhito, Hirano, Kunio, Li, Liu, Osumi, Takashi, Tada, Takashi, Kotera, Hidetoshi

Journal:

Biochemical and Biophysical Research Communications

Year:

2014

Language:

english

File:

PDF, 2.58 MB

english, 2014

15

STUDIES ON HABU SNAKE VENOM

Maeno, Hiroo, Morimura, Masato, Mitsuhashi, Susumu, Sawai, Yoshio, Okonogi, Takashi

Journal:

Japanese Journal of Microbiology

Year:

1959

Language:

english

File:

PDF, 784 KB

english, 1959

16

Clinicopathological characteristics of patients with immunoglobulin A nephropathy showing acute exacerbations after favorable long-term clinical courses

Tanaka, Mai, Miyazaki, Yoichi, Koike, Kentaro, Ueda, Hiroyuki, Tsuboi, Nobuo, Hirano, Keita, Okonogi, Hideo, Ogura, Makoto, Kawamura, Tetsuya, Yokoo, Takashi

Journal:

Clinical and Experimental Nephrology

Year:

2016

Language:

english

File:

PDF, 450 KB

english, 2016

17

Radio-sensitization effect of an mTOR inhibitor, temsirolimus, on lung adenocarcinoma A549 cells under normoxic and hypoxic conditions

Ushijima, Hiroki, Suzuki, Yoshiyuki, Oike, Takahiro, Komachi, Mayumi, Yoshimoto, Yuya, Ando, Ken, Okonogi, Noriyuki, Sato, Hiro, Noda, Shin-ei, Saito, Jun-ichi, Nakano, Takashi

Journal:

Journal of Radiation Research

Year:

2015

Language:

english

File:

PDF, 301 KB

english, 2015

18

Successful Treatment of Adult IgA Nephropathy with Nephrotic-Level Proteinuria by Combination Therapy Including Long-Term Coadministration of Mizoribine

Okonogi, Hideo, Kawamura, Tetsuya, Matsuo, Nanae, Takahashi, Yasuto, Yamamoto, Izumi, Yoshida, Hiraku, Koike, Kentaro, Yokoo, Takashi, Joh, Kensuke, Utsunomiya, Yasunori, Hanaoka, Kazushige, Hosoya, T

Journal:

Case Reports in Nephrology and Urology

Year:

2012

Language:

english

File:

PDF, 616 KB

english, 2012

19

STUDIES ON HABU SNAKE VENOM

Maeno, Hiroo, Mitsuhashi, Susumu, Sawai, Yoshio, Okonogi, Takashi

Journal:

Japanese Journal of Microbiology

Year:

1959

Language:

english

File:

PDF, 849 KB

english, 1959

20

STUDIES ON THE HABU SNAKE VENOM

Okonogi, Takashi, Hoshi, Shoji, Honma, Manabu, Sasamoto, Kiyoshi, Aoki, Kenji, Mitsuhashi, Susumu, Maeno, Hiroo, Sawai, Yoshio

Journal:

Japanese Journal of Microbiology

Year:

1959

Language:

english

File:

PDF, 10.40 MB

english, 1959

21

EXPERIMENTAL STUDIES ON HABU SNAKE VENOM

Okonogi, Takashi, Hoshi, Shoji, Honma, Manabu, Mitsuhashi, Susumu, Maeno, Hiroo, Sawai, Yoshio

Journal:

Japanese Journal of Microbiology

Year:

1960

Language:

english

File:

PDF, 3.22 MB

english, 1960

22

STUDIES ON THE HAEMOPHILUS PERTUSSIS

Yamamoto, Ayao, Sato, Masaaki, Tenjin, Hiroshi, Kimura, Hiroshi, Zen-Yoji, Hiroshi, Ohara, Kazuo, Tanaka, Tokumitsu, Okonogi, Takashi, Fukai, Koji, Yamaguchi, Kazuo, Kato, Kazuo

Journal:

Japanese Journal of Microbiology

Year:

1958

Language:

english

File:

PDF, 2.47 MB

english, 1958

23

STUDIES ON HABU SNAKE VENOM

Mitsuhashi, Susumu, Maeno, Hiroo, Kawakami, Masaya, Hashimoto, Hajime, Sawai, Yoshio, Miyazaki, Shonosuke, Makino, Masaaki, Kobayashi, Masaru, Okonogi, Takashi, Yamaguchi, Kazuo

Journal:

Japanese Journal of Microbiology

Year:

1959

Language:

english

File:

PDF, 1.03 MB

english, 1959

24

TCTAP A-095 Diagnostic Performance of Fractional Flow Reserve by Computed Tomography Compared to Other Modality

Okonogi, Taichi, Kawasaki, Tomohiro, Umeji, Kyoko, Fukuoka, Ryota, Shintani, Yoshiaki, Fujimura, Takashi

Journal:

Journal of the American College of Cardiology

Year:

2016

Language:

english

File:

PDF, 470 KB

english, 2016

25

Carbon-ion radiotherapy for locally advanced cervical cancer with bladder invasion

Shiba, Shintaro, Wakatsuki, Masaru, Kato, Shingo, Ohno, Tatsuya, Okonogi, Noriyuki, Karasawa, Kumiko, Kiyohara, Hiroki, Tsujii, Hirohiko, Nakano, Takashi, Kamada, Tadashi, Shozu, Makio

Journal:

Journal of Radiation Research

Year:

2016

Language:

english

File:

PDF, 876 KB

english, 2016

26

A Case of Kawasaki's Disease Combined with Septicemia

TSURUMIZU, Takashi, OKONOGI, Hiroshi, SHIBUSAWA, Tatsumi, HASHIMOTO, Takashi, MAKINO, Michiko, OTA, Humio, KUROSAKI, Tomomichi, TOBA, Tsuyoshi

Journal:

Kansenshogaku zasshi

Year:

1991

File:

PDF, 1.87 MB

1991

27

Optically Active Antifungal Azoles. X. Synthesis and Antifungal Activity of N-[4-(Azolyl)phenyl]- and N-[4-(Azolylmethyl)phenyl]-N'-[(1R,2R)-2-(2,4-difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]-azolones.

KITAZAKI, Tomoyuki, ICHIKAWA, Takashi, TASAKA, Akihiro, HOSONO, Hiroshi, MATSUSHITA, Yoshihiro, HAYASHI, Ryogo, OKONOGI, Kenji, ITOH, Katsumi

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

2000

File:

PDF, 1.60 MB

2000

28

A new aminothiazolylcephalosporin having 1-carboxyethoxyimino group, ME1228.

SHIBAHARA, SEIJI, OKONOGI, TSUNEO, YOSHIDA, TAKASHI, MURAI, YASUSHI, KUDO, TOSHIAKI, INOUYE, SHIGEHARU, KONDO, SHINICHI

Journal:

The Journal of Antibiotics

Year:

1990

Language:

english

File:

PDF, 425 KB

english, 1990

29

Optically Active Antifungal Azoles. XII. Synthesis and Antifungal Activity of the Water-Soluble Prodrugs of 1-[(1R,2R)-2-(2,4-Difluorophenyl)-2-hydroxy-1-methyl-3-(1H-1,2,4-triazol-1-yl)propyl]-3-[4-(1H-1-tetrazolyl)phenyl]-2-imidazolidinone.

ICHIKAWA, Takashi, KITAZAKI, Tomoyuki, MATSUSHITA, Yoshihiro, YAMADA, Masami, HAYASHI, Ryogo, YAMAGUCHI, Masashi, KIYOTA, Yutaka, OKONOGI, Kenji, ITOH, Katsumi

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

2001

Language:

english

File:

PDF, 104 KB

english, 2001

30

Evaluation of Mycoplasma hyopneumoniae Inactivated Vaccine in Pigs under Field Conditions.

OKADA, Munenori, SAKANO, Tetsuya, SENNA, Kazuhiro, MARUYAMA, Takashi, MUROFUSHI, Junichi, OKONOGI, Hiroshi, SATO, Shizuo

Journal:

Journal of Veterinary Medical Science

Year:

1999

Language:

english

File:

PDF, 31 KB

english, 1999

31

Fluctuation in Serum Sodium Levels Related to Ipragliflozin Administration in a Patient with Diabetic Nephropathy and Sequela of Traumatic Brain Injury

Okonogi, Hideo, Harada, Mikio, Sato, Hironobu, Tokoro, Kazuhiko, Nakayama, Issei, Tsuboi, Nobuo, Miyazaki, Yoichi, Kawamura, Tetsuya, Ogura, Makoto, Yokoo, Takashi

Journal:

Internal Medicine

Year:

2016

Language:

english

File:

PDF, 143 KB

english, 2016

32

Pigment Productions on Rice Starches by Monascus anka sp.

Takahashi, Mami, Matsumoto, Takashi, Okonogi, Shigeo

Journal:

Nippon Shokuhin Kagaku Kogaku Kaishi

Year:

2004

File:

PDF, 605 KB

2004

33

Synthesis and antibacterial activity of novel 2-methyl-1-oxacephalosporins.

OKONOGI, TSUNEO, SHIBAHARA, SEIJI, MURAI, YASUSHI, YOSHIDA, TAKASHI, INOUYE, SHIGEHARU, KONDO, SHINICHI, CHRISTENSEN, BURTON G.

Journal:

The Journal of Antibiotics

Year:

1990

Language:

english

File:

PDF, 989 KB

english, 1990

34

Synthesis of a novel 2.BETA.-methyl-1-oxacephalosporin, OCP-9-176.

SHIBAHARA, SEIJI, OKONOGI, TSUNEO, MURAI, YASUSHI, KUDO, TOSHIAKI, YOSHIDA, TAKASHI, KONDO, SHINICHI, CHRISTENSEN, BURTON G.

Journal:

The Journal of Antibiotics

Year:

1988

Language:

english

File:

PDF, 205 KB

english, 1988

35

Studien über die “Fettspeicherungszellen” der Leber bei verschiedenen Krankheiten

ITO, Toshio, OKONOGI, Takashi, SATSUKI, Shoichiro, NEMOTO, Manji, KANO, Koichiro

Journal:

Archivum histologicum japonicum

Year:

1952

File:

PDF, 3.46 MB

1952

36

Über die Einwanderung der Leukocyten in die Leberzellen bei einer menschlichen Leber

ITO, Toshio, OKONOGI, Takashi, KITAMURA, Tatsuo, YAMAGISHI, Mitsuo, UCHIDA, Genji, OHARA, Mitsuo

Journal:

Archivum histologicum japonicum

Year:

1958

File:

PDF, 4.18 MB

1958

37

Subcellular glucose exposure biases the spatial distribution of insulin granules in single pancreatic beta cells

Terao, Kyohei, Gel, Murat, Okonogi, Atsuhito, Fuke, Ariko, Okitsu, Teru, Tada, Takashi, Suzuki, Takaaki, Nagamatsu, Shinya, Washizu, Masao, Kotera, Hidetoshi

Journal:

Scientific Reports

Year:

2015

Language:

english

File:

PDF, 1.25 MB

english, 2015

38

Human papillomavirus genotype affects metastatic rate following radiotherapy in patients with uterine cervical cancer

Okonogi, Noriyuki, Kobayashi, Daijiro, Suga, Tomo, Imai, Takashi, Wakatsuki, Masaru, Ohno, Tatsuya, Kato, Shingo, Nakano, Takashi, Kamada, Tadashi

Journal:

Oncology Letters

Year:

2017

Language:

english

File:

PDF, 1006 KB

english, 2017

39

Clinical outcomes of carbon ion radiotherapy with concurrent chemotherapy for locally advanced uterine cervical adenocarcinoma in a phase 1/2 clinical trial (Protocol 1001)

Okonogi, Noriyuki, Wakatsuki, Masaru, Kato, Shingo, Karasawa, Kumiko, Kiyohara, Hiroki, Shiba, Shintaro, Kobayashi, Daijiro, Nakano, Takashi, Kamada, Tadashi, Shozu, Makio

Journal:

Cancer Medicine

Year:

2018

Language:

english

File:

PDF, 160 KB

english, 2018

40

Carbon-ion radiotherapy for inoperable endometrial carcinoma

Irie, Daisuke, Okonogi, Noriyuki, Wakatsuki, Masaru, Kato, Shingo, Ohno, Tatsuya, Karasawa, Kumiko, Kiyohara, Hiroki, Kobayashi, Daijiro, Tsuji, Hiroshi, Nakano, Takashi, Kamada, Tadashi, Shozu, Makio

Journal:

Journal of Radiation Research

Year:

2018

Language:

english

File:

PDF, 937 KB

english, 2018

41

Collaborative bacteriostatic activity of bovine lactoferrin with lysozyme against Escherichia coli O111.

SUZUKI, Takashi, YAMAUCHI, Koji, KAWASE, Kozo, TOMITA, Mamoru, KIYOSAWA, Isao, OKONOGI, Shigeo

Journal:

Agricultural and Biological Chemistry

Year:

1989

Language:

english

File:

PDF, 251 KB

english, 1989

42

The Biological Activities of Cytochrome c Hemeoctapeptide (CHP). (2). The Effects of CHP against the Tissue Damage caused by dl-Isoproterenol-induced Cardiac Infarct-like Angina

MURATA, MASAHIRO, BABA, YOSHIHIKO, MATSUO, EIICHI, YASUDA, HIROSHI, OKONOGI, TAKASHI, WATANABE, HIROSHI

Journal:

YAKUGAKU ZASSHI

Year:

1974

File:

PDF, 1.07 MB

1974

43

The Biological Activities of Cytochrome c Hemeoctapeptide (CHP). (1). The Effects of CHP against the Tissue Damage caused by Experimental Hypoxia

MURATA, MASAHIRO, BABA, YOSHIHIKO, MATSUO, EIICHI, YASUDA, HIROSHI, OKONOGI, TAKASHI, WATANABE, HIROSHI

Journal:

YAKUGAKU ZASSHI

Year:

1973

File:

PDF, 1.44 MB

1973

44

A Case of Concurrent MPO-/PR3-Negative ANCA-Associated Glomerulonephritis and Membranous Glomerulopathy

Nakada, Yasuyuki, Tsuboi, Nobuo, Takahashi, Yasuto, Yoshida, Hiraku, Hara, Yoriko, Okonogi, Hideo, Kawamura, Tetsuya, Arimura, Yoshihiro, Yokoo, Takashi

Journal:

Case Reports in Nephrology

Year:

2015

Language:

english

File:

PDF, 2.55 MB

english, 2015

45

High linear energy transfer carbon-ion irradiation increases the release of the immune mediator high mobility group box 1 from human cancer cells

Onishi, Masahiro, Okonogi, Noriyuki, Oike, Takahiro, Yoshimoto, Yuya, Sato, Hiro, Suzuki, Yoshiyuki, Kamada, Tadashi, Nakano, Takashi

Journal:

Journal of Radiation Research

Year:

2018

Language:

english

File:

PDF, 375 KB

english, 2018

46

Dose constraints in the rectum and bladder following carbon-ion radiotherapy for uterus carcinoma: a retrospective pooled analysis

Okonogi, Noriyuki, Fukahori, Mai, Wakatsuki, Masaru, Ohkubo, Yu, Kato, Shingo, Miyasaka, Yuhei, Tsuji, Hiroshi, Nakano, Takashi, Kamada, Tadashi

Journal:

Radiation Oncology

Year:

2018

Language:

english

File:

PDF, 769 KB

english, 2018

47

Tumor-specific CD8-positive T cell-mediated antitumor immunity is implicated in the antitumor effect of local hyperthermia

Ando, Ken, Suzuki, Yoshiyuki, Kaminuma, Takuya, Yoshimoto, Yuya, Oike, Takahiro, Okonogi, Noriyuki, Sato, Hiro, Tamaki, Tomoaki, Noda, Shin-Ei, Mimura, Kosaku, Nakano, Takashi

Journal:

International Journal of Hyperthermia

Year:

2018

Language:

english

File:

PDF, 1.12 MB

english, 2018

48

Phase I Study of Carbon Ion Radiotherapy and Image-Guided Brachytherapy for Locally Advanced Cervical Cancer

Ohno, Tatsuya, Noda, Shin-ei, Murata, Kazutoshi, Yoshimoto, Yuya, Okonogi, Noriyuki, Ando, Ken, Tamaki, Tomoaki, Kato, Shingo, Hirakawa, Takashi, Kanuma, Tatsuya, Minegishi, Takashi, Nakano, Takashi

Journal:

Year:

2018

Language:

english

File:

PDF, 1.71 MB

english, 2018

49

A grading system that predicts the risk of dialysis induction in IgA nephropathy patients based on the combination of the clinical and histological severity

Okonogi, Hideo, Kawamura, Tetsuya, Joh, Kensuke, Koike, Kentaro, Miyazaki, Yoichi, Ogura, Makoto, Tsuboi, Nobuo, Hirano, Keita, Matsushima, Masato, Yokoo, Takashi, Horikoshi, Satoshi, Suzuki, Yusuke,

Journal:

Clinical and Experimental Nephrology

Year:

2018

Language:

english

File:

PDF, 830 KB

english, 2018

50

Carbon-ion radiotherapy for lymph node oligo-recurrence: a multi-institutional study by the Japan Carbon-Ion Radiation Oncology Study Group (J-CROS)

Okonogi, Noriyuki, Kaminuma, Takuya, Okimoto, Tomoaki, Shinoto, Makoto, Yamamoto, Naoyoshi, Yamada, Shigeru, Murata, Kazutoshi, Ohno, Tatsuya, Shioyama, Yoshiyuki, Tsuji, Hiroshi, Nakano, Takashi, Kam

Journal:

International Journal of Clinical Oncology

Year:

2019

File:

PDF, 830 KB

2019

To build up a library is to create a life. It’s never just a random collection of books.

— Carlos María Domínguez

Official channel

Z-Library Desktop Launcher

Z-Library Since 2009 support@z-lib.do

EnglishРусскийEspañolItalianoελληνικάاللغة العربيةBahasa IndonesiaBahasa Malaysiaहिन्दीDeutschFrançaisPortuguêsУкраїнськаPolski中文繁體中文日本語Tiếng ViệtAzərbaycan DiliՀայոց լեզուภาษาไทยTürk Diliქართველიবাংলাپښتوతెలుగుاردو한국어SrpskiБългарски