Kazuya Yamasaki: search on Z-Library

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

Don't use scam websites

51

Efficacy of periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) for shoulder magnetic resonance (MR) imaging

Nagatomo, Kazuya, Yabuuchi, Hidetake, Yamasaki, Yuzo, Narita, Hiroshi, Kumazawa, Seiji, Kojima, Tsukasa, Sakai, Noriyuki, Masaki, Masahumi, Kimura, Hiroshi

Journal:

European Journal of Radiology

Year:

2016

Language:

english

File:

PDF, 2.70 MB

english, 2016

52

A Novel Tetranuclear Iron(III) Complex Having L-Alanine Bridges and an Unprecedented (Fe 4 (O 2 H) Core

Yano, Shigenobu, Inagaki, Tomoko, Yamada, Yasuko, Kato, Masako, Yamasaki, Mikio, Sakai, Ken, Tsubomura, Taro, Sato, Mitsunobu, Mori, Wasuke, Yamaguchi, Kazuya, Kinoshita, Isamu

Journal:

Chemistry Letters

Year:

1996

File:

PDF, 434 KB

1996

53

Balloon pulmonary angioplasty improves interventricular dyssynchrony in patients with inoperable chronic thromboembolic pulmonary hypertension: a cardiac MR imaging study

Yamasaki, Yuzo, Nagao, Michinobu, Abe, Kohtaro, Hosokawa, Kazuya, Kawanami, Satoshi, Kamitani, Takeshi, Yamanouchi, Torahiko, Horimoto, Koshin, Yabuuchi, Hidetake, Honda, Hiroshi

Journal:

The International Journal of Cardiovascular Imaging

Year:

2017

Language:

english

File:

PDF, 1.64 MB

english, 2017

54

ABO-Incompatible Living Kidney Transplant Recipients from Spousal Donors Receiving Rituximab

Uchida, Junji, Iwai, Tomoaki, Kabei, Kazuya, Nishide, Shunji, Yamasaki, Takeshi, Kuwabara, Nobuyuki, Naganuma, Toshihide, Kumada, Norihiko, Takemoto, Yoshiaki, Nakatanti, Tatsuya

Journal:

Urologia Internationalis

Year:

2016

Language:

english

File:

PDF, 144 KB

english, 2016

55

Three-dimensional phase contrast magnetic resonance imaging validated to assess pulmonary artery flow in patients with chronic thromboembolic pulmonary hypertension

Kawakubo, Masateru, Akamine, Hiroshi, Yamasaki, Yuzo, Takemura, Atsushi, Abe, Kohtaro, Hosokawa, Kazuya, Morishita, Junji, Nagao, Michinobu

Journal:

Radiological Physics and Technology

Year:

2017

Language:

english

File:

PDF, 1.10 MB

english, 2017

56

Electrochemical Method for Estimating the Antioxidative Effects of Methanol Extracts of Crude Drugs.

YAMASAKI, Kazuya, HASHIMOTO, Akio, KOKUSENYA, Yoshio, MIYAMOTO, Takaaki, SATO, Tadashi

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1994

File:

PDF, 553 KB

1994

57

Contents of Lecithin and Choline in Crude Drugs.

YAMASAKI, Kazuya, KIKUOKA, Masayuki, NISHI, Hiroyuki, KOKUSENYA, Yoshio, MIYAMOTO, Takaaki, MATSUO, Masaaki, SATO, Tadashi

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1994

File:

PDF, 483 KB

1994

58

Study on "Signal" Constituents for the Evaluation of Animal Crude Drugs. II. Organic Acids.

HASHIMOTO, Akio, YAMASAKI, Kazuya, KOKUSENYA, Yoshio, MIYAMOTO, Takaaki, NAKAI, Hideo, SATO, Tadashi

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1995

File:

PDF, 722 KB

1995

59

Investigation of "Signal" Constituents for the Evaluation of Animal Crude Drugs. I. Free Amino Acids and Total Amino Acids.

HASHIMOTO, Akio, YAMASAKI, Kazuya, KOKUSENYA, Yoshio, MIYAMOTO, Takaaki, SATO, Tadashi

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1994

File:

PDF, 749 KB

1994

60

Determination of lecithin in gastric juice by HPLC with electrochemical detection using enzyme reaction.

YAMASAKI, Kazuya, KIKUOKA, Masayuki, SAEKI, Takafumi, KOKUSENYA, Yoshio, MATSUO, Masaaki

Journal:

Year:

1992

File:

PDF, 557 KB

1992

61

Effect of anodic pretreatment of glassy carbon electrodes on electrochemical detection of denopamine.

YAMASAKI, Kazuya, YASUDA, Masahiro, KOKUSENYA, Yoshio, MATSUO, Masaaki

Journal:

Year:

1991

File:

PDF, 528 KB

1991

62

Prevention of Marine Biofouling by Ozonation Using Plate-Type Heat Exchanger.

Ikegami, Yasuyuki, Urata, Kazuya, Tsuru, Takeshi, Sumitomo, Hiroyuki, Yamasaki, Tatsuo, Uehara, Haruo

Journal:

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B

Year:

1995

File:

PDF, 780 KB

1995

63

Influence of Aging and Movement Speed on Trunk Kinematics during Sit-to-Stand Motion

NAKASHIMA, Daigo, ISHIMARU, Kazuya, YAMASAKI, Takahiro, ANAN, Masaya, KITO, Nobuhiro, SHINKODA, Koichi

Journal:

Rigakuryoho Kagaku

Year:

2010

File:

PDF, 633 KB

2010

64

Localized Amyloid Deposition at the Ampulla of Vater

Igawa, Shoko, Tanaka, Shouichi, Miyamoto, Kazuya, Yamasaki, Rie

Journal:

Internal Medicine

Year:

2016

Language:

english

File:

PDF, 580 KB

english, 2016

65

Determination of Curculigoside in Curculiginis Rhizoma by High Performance Liquid Chromatography.

YAMASAKI, Kazuya, HASHIMOTO, Akio, KOKUSENYA, Yoshio, MIYAMOTO, Takaaki, MATSUO, Masaaki, SATO, Tadashi

Journal:

CHEMICAL & PHARMACEUTICAL BULLETIN

Year:

1994

File:

PDF, 461 KB

1994

66

Energy efficiency and pulmonary artery flow after balloon pulmonary angioplasty for inoperable, chronic thromboembolic pulmonary hypertension: Analysis by phase-contrast MRI

Nagao, Michinobu, Yamasaki, Yuzo, Abe, Kohtaro, Hosokawa, Kazuya, Kawanami, Satoshi, Kamitani, Takeshi, Yamanouchi, Torahiko, Yabuuchi, Hidetake, Fukushima, Kenji, Honda, Hiroshi

Journal:

European Journal of Radiology

Year:

2017

Language:

english

File:

PDF, 1005 KB

english, 2017

67

Effect of flavin compounds on uranium(VI) reduction- kinetic study using electrochemical methods with UV-vis spectroscopy

Yamasaki, Shinya, Tanaka, Kazuya, Kozai, Naofumi, Ohnuki, Toshihiko

Journal:

Applied Geochemistry

Year:

2017

Language:

english

File:

PDF, 3.55 MB

english, 2017

68

High-Dose Methotrexate and Cytarabine-Based Multi-Agent Chemotherapy (Modified Bonn Protocol) for Systemic Lymphoma with CNS Involvement

Umino, Kento, Fujiwara, Shin-ichiro, Sato, Kazuya, Minakata, Daisuke, Nakano, Hirofumi, Yamasaki, Ryoko, Kawasaki, Yasufumi, Sugimoto, Miyuki, Yamamoto, Chihiro, Hatano, Kaoru, Okazuka, Kiyoshi, Oh, I

Journal:

Acta Haematologica

Year:

2017

Language:

english

File:

PDF, 127 KB

english, 2017

69

Subacute effusive-constrictive pericarditis: Echocardiography-guided diagnosis and management

Ohsawa, Naoto, Nakaoka, Yoko, Kubokawa, Sho-ichi, Kubo, Toru, Yamasaki, Naohito, Kitaoka, Hiroaki, Kawai, Kazuya, Hamashige, Naohisa, Doi, Yoshinori

Journal:

Journal of Cardiology Cases

Year:

2017

Language:

english

File:

PDF, 1.57 MB

english, 2017

70

Mild Hydrogenation of Amides to Amines over a Platinum-Vanadium Bimetallic Catalyst

Mitsudome, Takato, Miyagawa, Kazuya, Maeno, Zen, Mizugaki, Tomoo, Jitsukawa, Koichiro, Yamasaki, Jun, Kitagawa, Yasutaka, Kaneda, Kiyotomi

Journal:

Angewandte Chemie International Edition

Year:

2017

Language:

english

File:

PDF, 1.41 MB

english, 2017

71

Mild Hydrogenation of Amides to Amines over a Platinum-Vanadium Bimetallic Catalyst

Mitsudome, Takato, Miyagawa, Kazuya, Maeno, Zen, Mizugaki, Tomoo, Jitsukawa, Koichiro, Yamasaki, Jun, Kitagawa, Yasutaka, Kaneda, Kiyotomi

Journal:

Angewandte Chemie

Year:

2017

Language:

english

File:

PDF, 1.34 MB

english, 2017

72

Multifactorial etiology of heart failure in older adults

Hirakawa, Yoko, Takenaka, Nana, Nishiyama, Miho, Bando, Kanji, Sugane, Hiroki, Asaba, Koichi, Kubo, Toru, Yamasaki, Naohito, Kitaoka, Hiroaki, Kawai, Kazuya, Hamashige, Naohisa, Doi, Yoshinori

Journal:

Geriatrics & Gerontology International

Year:

2017

Language:

english

File:

PDF, 174 KB

english, 2017

73

A Case of Amyloid Cardiomyopathy Proved by Myocardial Biopsy but Diagnosed as Isolated Cardiac Sarcoidosis with Clinical Manifestations

Takahashi, Makoto, Nakashima, Yasuhiro, Ochi, Yuri, Miyagawa, Kazuya, Noguchi, Tatuya, Kubo, Toru, Yamasaki, Naohito, Kitaoka, Hiroaki

Journal:

Journal of Cardiac Failure

Year:

2017

Language:

english

File:

PDF, 171 KB

english, 2017

74

Effects of Upper Limb Exercise on Thermoregulatory Responses in Patients with Spinal Cord Injury.

Ishii, Kojiro, Yamasaki, Masahiro, Muraki, Satoshi, Komura, Takashi, Kikuchi, Kunio, Satake, Terutoshi, Miyagawa, Toshiaki, Fujimoto, Shigeo, Maeda, Kazuya

Journal:

APPLIED HUMAN SCIENCE Journal of Physiological Anthropology

Year:

1995

File:

PDF, 686 KB

1995

75

Prevention Effect of Antiplatelets on Aneurysm Rupture in a Mouse Intracranial Aneurysm Model

Suzuki, Tomo, Kamio, Yoshinobu, Makino, Hiroshi, Hokamura, Kazuya, Kimura, Tetsuro, Yamasaki, Tomohiro, Hiramatsu, Hisaya, Umemura, Kazuo, Namba, Hiroki

Journal:

Cerebrovascular Diseases

Year:

2018

Language:

english

File:

PDF, 8.91 MB

english, 2018

76

Comprehensive Analysis of the Activation and Proliferation Kinetics and Effector Functions of Human Lymphocytes, and Antigen Presentation Capacity of Antigen-Presenting Cells in Xenogeneic Graft-Versus-Host Disease

Kawasaki, Yasufumi, Sato, Kazuya, Hayakawa, Hiroko, Takayama, Norihito, Nakano, Hirofumi, Ito, Ryoji, Mashima, Kiyomi, Oh, Iekuni, Minakata, Daisuke, Yamasaki, Ryoko, Morita, Kaoru, Ashizawa, Masahiro

Journal:

Biology of Blood and Marrow Transplantation

Year:

2018

Language:

english

File:

PDF, 878 KB

english, 2018

77

Studies on Structures of Degradation Products of Aspoxicillin. I. Hydrolysis Products of Aspoxicillin in Aqueous Solution

YANAGIDA, Tadasu, KOJIMA, Yukio, YAMASAKI, Kazuya, DAIRA, Isamu, ISHIKAWA, Tsutomu, KINUMAKI, Akio, WAGATSUMA, Mitsuyoshi

Journal:

YAKUGAKU ZASSHI

Year:

1990

File:

PDF, 628 KB

1990

78

Inhibitory Effects of Natural Medicines on the Enzymes Related to the Skin

SAWABE, Yoshiyuki, YAMASAKI, Katsuhiro, IWAGAMI, Shozo, KAJIMURA, Keiji, NAKAGOMI, Kazuya

Journal:

YAKUGAKU ZASSHI

Year:

1998

File:

PDF, 678 KB

1998

79

2P230 Gene regulation for a specific inhibition of the typeIII secretion of Salmonella virulence factors by monoterpenes of plant essential oils(37. Molecular motor (II),Poster Session,Abstract,Meeting Program of EABS & BSJ 2006)

Mizusaki, Hideaki, Yamasaki, Yumiko, Akimitsu, Kazuya, Aizawa, Shin-Ichi

Journal:

Seibutsu Butsuri

Year:

2006

Language:

english

File:

PDF, 153 KB

english, 2006

80

10.1271/nogeikagaku1924.54.271

SHIMODA, Mitsuya, YAMASAKI, Kazuya, OSAJIMA, Yutaka

Journal:

Journal of the agricultural chemical society of Japan

Year:

1980

File:

PDF, 208 KB

1980

81

Assay Method of Constituents of Crude Drugs in Drinkable Preparations by High Performance Liquid Chromatography. Study of Each Assay Method of Main Constituents of Crude Drugs

YAMASAKI, Kazuya, HASHIMOTO, Akio, KOKUSENYA, Yoshio, MIYAMOTO, Takaaki, NAKAI, Hideo, SATO, Tadashi

Journal:

YAKUGAKU ZASSHI

Year:

1995

File:

PDF, 869 KB

1995

82

Anaplastic changes of diffuse leptomeningeal glioneuronal tumor with polar spongioblastoma pattern

Yamasaki, Tomohiro, Sakai, Naoto, Shinmura, Kazuya, Kawaji, Hiroshi, Koizumi, Shinichiro, Samashima, Tetsuro, Namba, Hiroki

Journal:

Brain Tumor Pathology

Year:

2018

Language:

english

File:

PDF, 2.49 MB

english, 2018

83

Primary Cardiac Lymphoma: A Lesson Learned from an Unsuccessful Experience

Ito, Izumi, Nakaoka, Yoko, Kubokawa, Sho-ichi, Sugane, Hiroki, Kusume, Takahiro, Matsuda, Hideyuki, Imai, Ryu-ichiro, Nishida, Koji, Kubo, Toru, Yamasaki, Naohito, Kitaoka, Hiroaki, Kawai, Kazuya, Ham

Journal:

Internal Medicine

Year:

2019

Language:

english

File:

PDF, 5.17 MB

english, 2019

84

Clinical usefulness of right ventricular 3D area strain in the assessment of treatment effects of balloon pulmonary angioplasty in chronic thromboembolic pulmonary hypertension: comparison with 2D feature-tracking MRI

Kawakubo, Masateru, Yamasaki, Yuzo, Kamitani, Takeshi, Sagiyama, Koji, Matsuura, Yuko, Hino, Takuya, Abe, Kohtaro, Hosokawa, Kazuya, Yabuuchi, Hidetake, Honda, Hiroshi

Journal:

European Radiology

Year:

2019

File:

PDF, 1.45 MB

2019

85

Clinical usefulness of right ventricular 3D area strain in the assessment of treatment effects of balloon pulmonary angioplasty in chronic thromboembolic pulmonary hypertension: comparison with 2D feature-tracking MRI

Kawakubo, Masateru, Yamasaki, Yuzo, Kamitani, Takeshi, Sagiyama, Koji, Matsuura, Yuko, Hino, Takuya, Abe, Kohtaro, Hosokawa, Kazuya, Yabuuchi, Hidetake, Honda, Hiroshi

Journal:

European Radiology

Year:

2019

Language:

english

File:

PDF, 1.45 MB

english, 2019

86

Incidence and Risk Factors for Meniscal Cyst After Meniscal Repair

Nishino, Kazuya, Hashimoto, Yusuke, Nishida, Yohei, Terai, Shozaburo, Takahashi, Shinji, Yamasaki, Shinya, Nakamura, Hiroaki

Journal:

Arthroscopy: The Journal of Arthroscopic & Related Surgery

Year:

2019

File:

PDF, 508 KB

2019

87

Late Conversion to Everolimus with Calcineurin Inhibitor Minimization in Stable Kidney Transplant Recipients - Analysis of Factors Affecting ΔeGFR

Uchida, Junji, Iwai, Tomoaki, Kabei, Kazuya, Nishide, Shunji, Maeda, Keiko, Kosoku, Akihiro, Shimada, Hisao, Kuwabara, Nobuyuki, Yamasaki, Takeshi, Naganuma, Toshihide, Tanaka, Tomoaki, Kuratsukuri, K

Journal:

Transplantation Journal

Year:

2018

Language:

english

File:

PDF, 165 KB

english, 2018

88

Dissolution of radioactive, cesium-rich microparticles released from the Fukushima Daiichi Nuclear Power Plant in simulated lung fluid, pure-water, and seawater

Suetake, Mizuki, Nakano, Yuriko, Furuki, Genki, Ikehara, Ryohei, Komiya, Tatsuki, Kurihara, Eitaro, Morooka, Kazuya, Yamasaki, Shinya, Ohnuki, Toshihiko, Horie, Kenji, Takehara, Mami, Law, Gareth T.W.

Journal:

Year:

2019

Language:

english

File:

PDF, 1.85 MB

english, 2019

89

A 0.25-27-Gb/s PAM4/NRZ Transceiver With Adaptive Power CDR and Jitter Analysis

Komatsu, Yoshihide, Shinmyo, Akinori, Kato, Shuji, Funabashi, Masami, Hatooka, Kazuya, Fujita, Mayuko, Tanaka, Kenji, Yamasaki, Aoi, Fukuda, Kouichi

Journal:

IEEE Journal of Solid-State Circuits

Year:

2019

Language:

english

File:

PDF, 42 KB

english, 2019

90

Experimental Measurement of Atomic Composition in Sooting Luminous Flame by Laser-Induced Breakdown Spectroscopy

Iwata, Kazuya, Koide, Hiroki, Imamura, Osamu, Yamasaki, Hiroshi, Akihama, Kazuhiro

Journal:

Year:

2019

Language:

english

File:

PDF, 878 KB

english, 2019

91

The reproducibility of measurements using a standardization phantom for the evaluation of fractional anisotropy (FA) derived from diffusion tensor imaging (DTI)

Kimura, Mitsuhiro, Yabuuchi, Hidetake, Matsumoto, Ryoji, Kobayashi, Koji, Yamashita, Yasuo, Nagatomo, Kazuya, Mikayama, Ryoji, Kamitani, Takeshi, Sagiyama, Koji, Yamasaki, Yuzo

Journal:

Magnetic Resonance Materials in Physics, Biology and Medicine

Year:

2019

Language:

english

File:

PDF, 1.20 MB

english, 2019

92

Clinical Characteristics of Patients Undergoing Two-stage Laparoscopic Cholecystectomy Including Endoscopic Sphincterotomy for Common Bile Duct Stones

IWAMOTO, Kazuya, HATANAKA, Nobutaka, MORIMOTO, Yoshikazu, MAEDA, Kousaku, HIRAO, Takahumi, YAMASAKI, Yoshio

Journal:

Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association)

Year:

2017

File:

PDF, 780 KB

2017

93

Abundance and distribution of radioactive cesium-rich microparticles released from the Fukushima Daiichi Nuclear Power Plant into the environment

Ikehara, Ryohei, Morooka, Kazuya, Suetake, Mizuki, Komiya, Tatsuki, Kurihara, Eitaro, Takehara, Masato, Takami, Ryu, Kino, Chiaki, Horie, Kenji, Takehara, Mami, Yamasaki, Shinya, Ohnuki, Toshihiko, La

Journal:

Year:

2020

Language:

english

File:

PDF, 2.64 MB

english, 2020

94

The reproducibility of measurements using a standardization phantom for the evaluation of fractional anisotropy (FA) derived from diffusion tensor imaging (DTI)

Kimura, Mitsuhiro, Yabuuchi, Hidetake, Matsumoto, Ryoji, Kobayashi, Koji, Yamashita, Yasuo, Nagatomo, Kazuya, Mikayama, Ryoji, Kamitani, Takeshi, Sagiyama, Koji, Yamasaki, Yuzo

Journal:

Magnetic Resonance Materials in Physics, Biology and Medicine

Year:

2019

File:

PDF, 1.20 MB

2019

95

Adsorption mechanism of ReO4− on Ni–Zn layered hydroxide salt and its application to removal of ReO4− as a surrogate of TcO4−

Tanaka, Kazuya, Kozai, Naofumi, Yamasaki, Shinya, Ohnuki, Toshihiko, Kaplan, Daniel I., Grambow, Bernd

Journal:

Applied Clay Science

Year:

2019

Language:

english

File:

PDF, 1.56 MB

english, 2019

96

Efficacy of the Drip and Ship Method in 24-h Helicopter Transportation and Teleradiology for Isolated Islands

HIU, Takeshi, OZONO, Keisuke, KAWAHARA, Ichiro, YAMASAKI, Kazumi, SATOH, Kei, OTSUKA, Hiroaki, NAKAMICHI, Chikaaki, IWANAGA, Hiroshi, FUKUDA, Yutaka, HONDA, Kazuya, HIU, Hiroyuki, ONO, Tomonori, HARAG

Journal:

Neurologia medico-chirurgica

Year:

2019

Language:

english

File:

PDF, 217 KB

english, 2019

97

Alloreactive T Cells Display a Distinct Chemokine Profile in Response to Conditioning in Xenogeneic GVHD Models

Kawasaki, Yasufumi, Sato, Kazuya, Nakano, Hirofumi, Hayakawa, Hiroko, Izawa, Junko, Takayama, Norihito, Mashima, Kiyomi, Oh, Iekuni, Minakata, Daisuke, Yamasaki, Ryoko, Morita, Kaoru, Ashizawa, Masahi

Journal:

Transplantation Journal

Year:

2019

File:

PDF, 2.61 MB

2019

98

Increase in Peripheral Blood Flow by Intravenous Administration of Prostaglandin E1 in Patients with Peripheral Arterial Disease, Accompanied by Up-Regulation of Hepatocyte Growth Factor

MAKINO, Hirofumi, AOKI, Motokuni, HASHIYA, Naotaka, YAMASAKI, Keita, HIRAOKA, Kazuya, SHIMIZU, Hideo, AZUMA, Junya, KURINAMI, Hitomi, OGIHARA, Toshio, MORISHITA, Ryuichi

Journal:

Hypertension Research

Year:

2004

File:

PDF, 226 KB

2004

99

A novel pulmonary circulation imaging using dynamic digital radiography for chronic thromboembolic pulmonary hypertension

Yamasaki, Yuzo, Abe, Kohtaro, Hosokawa, Kazuya, Kamitani, Takeshi

Journal:

European Heart Journal

Year:

2020

File:

PDF, 241 KB

2020

100

Abnormal displacement of discoid lateral meniscus with snapping knee detected by full extension and deep flexion MRI: Report of two cases

Hashimoto, Yusuke, Kazuya, Nishino, Takigami, Junsei, Yamasaki, Shinya, Tomihara, Tomohiro, Shimada, Nagakazu, Nakamura, Hiroaki

Journal:

Asia-Pacific Journal of Sports Medicine, Arthroscopy, Rehabilitation and Technology

Year:

2020

File:

PDF, 1.14 MB

2020

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