Article
Engineering, Environmental
Gaurav Bhattacharjee, Hari Prakash Veluswamy, Asheesh Kumar, Praveen Linga
Summary: Solidified Natural Gas (SNG) technology provides a compact and safe option for large-scale natural gas storage. Introducing thermodynamic promoters like THF into the classical methane-water system enables rapid gas uptake at moderate pressure and temperature. The study compares the stability of cylindrical mixed methane-THF (sII) and pure methane (sI) hydrate pellets, with results showing exceptional stability of sII hydrates and significant gas evolution from sI hydrates stored at different temperatures. Long-term stability testing of methane-THF (sII) hydrate pellets produced using fresh and seawater demonstrates the commercial viability of SNG technology.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Vikas Dhamu, M. Fahed Qureshi, Saifudin Abubakar, Adam Usadi, Timothy A. Barckholtz, Ashish B. Mhadeshwar, Praveen Linga
Summary: Carbon capture and storage [CCS] is essential for reducing CO2 emissions, and one potential CCS concept is compressing and storing captured CO2 as gas hydrates in deep oceanic sediments. However, the high salinity of seawater may affect the formation and storage of CO2 hydrates. Therefore, it is crucial to understand the kinetics of liquid CO2 hydrate formation and dissociation in static brine systems.
Article
Engineering, Environmental
Mohd Hafiz Abu Hassan, Farooq Sher, Saba Sehar, Tahir Rasheed, Ayesha Zafar, Jasmina Sulejmanovic, Usman Ali, Tazien Rashid
Summary: Gas hydrate formation is considered a new technology to reduce the impact of greenhouse gases, specifically the increasing CO2 concentration in the atmosphere. Experimental studies have shown that different sample preparation procedures, stirring speed, and temperature all play a role in the rate of CO2 hydrate formation. Promoters combination has also been found to increase the conversion of water to hydrate over longer experimental durations.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Byeonggwan Lee, Kyuchul Shin, Sanehiro Muromachi, Igor L. Moudrakovski, Christopher I. Ratcliffe, John A. Ripmeester
Summary: Antifreezes such as methanol and ammonia can enhance methane storage in binary clathrate hydrates like THF and TBAB. Methanol acts as a catalyst for methane hydrate formation and induces TBAB hydrates to form an orthorhombic structure suitable for methane storage. These findings suggest that methanol could play a crucial role in hydrate-based methane storage systems.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Ni Liu, Fei Meng, Litao Chen, Liang Yang, Daoping Liu
Summary: This study investigated the effects of two carbon nanomaterials on the gas storage performance of CO2 hydrate. It was found that the MWCNT-HB system showed a stronger ability to improve gas storage performance compared to the MWCNT system. Secondary formation of hydrate in the MWCNT-HB system was observed, leading to an increase in gas storage capacity.
Article
Energy & Fuels
Shenglong Wang, Jian Xu, Shuanshi Fan, Yanhong Wang, Xuemei Lang, Chi Yu
Summary: A new surface-treatment method was proposed in this study to increase the preservation stability of CH4 hydrate at atmospheric pressure by coating CH4 hydrate with CP-CH4 hydrate. The presence of CP-CH4 hydrate layer on the sample surface was confirmed, and the hydrate pellet was successfully preserved under superheated conditions with minimal CH4 loss.
Article
Energy & Fuels
Shuai Wang, Changrui Shi, Huiquan Liu, Lunxiang Zhang, Jiafei Zhao, Yongchen Song, Zheng Ling
Summary: This study demonstrates a simple strategy to fabricate composite aerogels for boosting CO2 hydrate formation using natural vermiculite and MXene nanosheets. The research finds that by controlling the mass ratio of vermiculite and MXene, the structure and surface functional groups of the aerogels can be finely tuned, leading to enhanced CO2 storage capacity and hydrate formation kinetics.
Article
Engineering, Environmental
Changrui Shi, Huiquan Liu, Lunxiang Zhang, Mingjun Yang, Yongchen Song, Jiafei Zhao, Zheng Ling
Summary: Sluggish formation kinetics is a challenge for the practical application of gas hydrate-based technologies. Carbon monoliths with controlled surface functional groups enhance the nucleating ability of methane hydrates. Carbonyl oxygen is identified as the most effective functional group in reducing induction time and enhancing formation kinetics. The turned hydrogen bonds near the CBCM surface contribute to the enhanced formation kinetics. Optimized carbonyl oxygen in CBCM significantly improves methane hydrate formation kinetics and storage capacity with outstanding cycle stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Satoshi Takeya, Sanehiro Muromachi, Akio Yoneyama, Keiichi Hirano, Kazuyuki Hyodo, John A. Ripmeester
Summary: Methane hydrate in the superheated state can be stored for a long time, and by coating it with other hydrates, the need for a defect-free interface between different hydrates can be eliminated. This study found that liquid cyclopentane can keep gas hydrate crystals intact and convert the outer layer of methane hydrate into cyclopentane hydrate.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Thermodynamics
Qi Zhao, Zhao-Yang Chen, Xiao-Sen Li, Zhi-Ming Xia
Summary: This study investigates the influence of an electrostatic field on the formation of CO2 hydrate in fresh water, memory water, and saltwater systems. Experimental results show that the presence of an electrostatic field can promote the nucleation and growth of CO2 hydrate. However, the electrostatic field weakens the memory effect in the memory water system and increases the completion time of hydrate formation in the salt water system.
Article
Energy & Fuels
M. Fahed Qureshi, Vikas Dhamu, Adam Usadi, Timothy A. Barckholtz, Ashish B. Mhadeshwar, Praveen Linga
Summary: Carbon capture and sequestration is a critical method to reduce carbon footprint and achieve net-zero carbon emissions. This study examines the kinetics of CO2 hydrate formation using liquid CO2 and a green kinetic promoter, and presents a mathematical model for quantifying hydrate formation kinetics. The results show that the green kinetic promoter enhances the overall water to hydrate conversion and reduces the formation process time.
Article
Energy & Fuels
Amin Hosseini Zadeh, Ijung Kim, Seunghee Kim
Summary: The experiment showed that the amount of CO2 has a significant impact on the formation and dissociation of CO2 hydrate. In the CO2-limited condition, CO2 was insufficient to saturate water leading to no hydrate crystal formation, while in the water-limited condition, CO2 fully saturated water resulting in hydrate crystal formation. Increasing CO2 ratio led to denser and more stable CO2 hydrate formation.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Yingfei Wang, Bo Dong, Ping Wang, Lunxiang Zhang, Cong Chen, Yan Qin, Yang Liu, Weizhong Li, Yongchen Song
Summary: This study develops a model to investigate the effects of initial water on CO2-CH4 dynamic replacement in a hydrate in a pore network, and validates the model with a previous experiment. The results show that the presence of initial water leads to a faster carbon dioxide displacement, weaker methane hydrate dissociation, more pure carbon dioxide hydrate formation, similar mixed hydrate generation, and a lower exchange rate. The exchange reaction starts at the edges of hydrate distribution areas and progresses towards the inside.
Article
Engineering, Environmental
Yu Feng, Yang Zhao, Yuze Han, Yanzhen Liu, Lunxiang Zhang, Jiafei Zhao, Lei Yang, Yongchen Song
Summary: The formation and dissociation behavior of CO2 hydrates in the presence of clay particles were investigated using low-field nuclear magnetic resonance. It was found that montmorillonite particles significantly promoted the conversion of water into hydrate, while illite particles had a weaker promoting effect. According to the DLVO theory, the total interaction potential between montmorillonite particles was much higher than that between illite particles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Sai Kiran Burla, Bhavya Tulluru, Pinnelli S. R. Prasad
Summary: Amino acids are important additives in gas-hydrate based technology, playing a dual role as inhibitors or promoters depending on concentration. The nature of the side chain and its length are critical factors, with different amino acids affecting CO2 and CH4 hydrates differently.
Article
Food Science & Technology
Putri Wulandari Zainal, Daimon Syukri, Khandra Fahmy, Teppei Imaizumi, Manasikan Thammawong, Mizuki Tsuta, Masayasu Nagata, Kohei Nakano
Summary: The aim of this study was to clarify the lipidomic alteration of stored cabbage and identify lipid molecules indicative of freshness. The results showed that lipidomic profiling could be viable for assessing the freshness of whole cabbage.
FOOD ANALYTICAL METHODS
(2023)
Article
Anatomy & Morphology
Toru Kanahashi, Hirohiko Imai, Hiroki Otani, Shigehito Yamada, Akio Yoneyama, Tetsuya Takakuwa
Summary: This study used 3-D imaging and diffusion tensor imaging to evaluate the morphogenesis and fiber structure of the developing human diaphragm during the embryonic and early fetal periods. The findings have significant implications for fetal medicine and the understanding of congenital anomalies.
JOURNAL OF ANATOMY
(2023)
Article
Food Science & Technology
Midori Yasuda, Akio Yoneyama, Satoshi Takeya, Masaaki Tabata, Miku Kawasaki, Narumi Ehara, Ichiro Hirosawa, Yoshiki Seno
Summary: The objective of this study was to analyze the texture characteristics of machine-made somen noodles based on their microstructure. The findings revealed that the firmness of the noodles varied depending on the type, with machine-made somen (Kanzaki Somen, MS1) being less firm than hand-pulled somen (Ibonoito, TS), but stronger than another type of machine-made somen (Number One, MS2) according to different testing methods. The microstructural differences, such as the presence of voids in the center of the noodles and the distribution of small voids throughout the machine-made somen, were identified as factors affecting the firmness and breaking strength of the noodles. Additionally, the rate of water absorption during boiling was found to impact the texture of the somen noodles.
JOURNAL OF THE JAPANESE SOCIETY FOR FOOD SCIENCE AND TECHNOLOGY-NIPPON SHOKUHIN KAGAKU KOGAKU KAISHI
(2023)
Article
Multidisciplinary Sciences
Yong Chen, Satoshi Takeya, Amadeu K. Sum
Summary: Clathrate hydrates are ordered structures stabilized by hydrophobic interactions between water and guest molecules. In this study, an alternative method is proposed to understand the complex structures of clathrate hydrates, revealing the diverse crystalline hydrogen-bonded networks that can be formed. The topological dual relations between clathrate hydrate networks and tetrahedrally close-packed structures provide insights into their nucleation, phase transition, and co-existence mechanisms. Molecular dynamics simulations are employed to explore the intrinsic structural relationships of clathrate hydrates and other unrelated ordered materials.
NATURE COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Hiromi Miki, Akio Yoneyama, Keiichi Hirano
Summary: In this study, X-ray interferometer-based phase-contrast computed tomography was used for the nondestructive observation of precooked rice products. The phase-contrast images successfully captured the internal structure of cooked rice grains, while X-ray absorption images were unable to distinguish the grains.
Article
Thermodynamics
Akihiro Hachikubo, Kaede Takizawa, Satoshi Takeya
Summary: The stable isotope fractionation between nitrogen gas and hydrate phases during nitrogen hydrate formation was investigated. It was found that nitrogen hydrate was slightly more susceptible to 14N15N inclusion, indicating a slightly lower equilibrium pressure for 14N15N hydrate compared to 14N2 hydrate.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Chemistry, Physical
Satoshi Takeya, Hiroshi Fujihisa, Saman Alavi, Ryo Ohmura
Summary: We report a thermally induced phase transition of cubic structure II hydrates of tetrahydropyran (THP) and CO2 below about 140 K. The phase transition was characterized by powder X-ray diffraction measurements at variable temperatures. A dynamical ordering of the CO2 guests in small pentagonal dodecahedral 512 host water cages, not previously observed in the simple CO2 hydrate, occurs simultaneously with the symmetry lowering transition from a cubic structure II to a tetragonal unit cell.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Review
Chemistry, Multidisciplinary
Akio Yoneyama, Daiko Takamatsu, Thet-Thet Lwin, Shigehito Yamada, Tetsuya Takakuwa, Kazuyuki Hyodo, Keiichi Hirano, Satoshi Takeya
Summary: Crystal-based X-ray interferometry (CXI) detects X-ray phase shifts with the highest sensitivity among the X-ray phase-detecting methods. Phase-contrast X-ray imaging (PCXI) using CXI has the highest density resolution and has been widely applied in various fields. Novel imaging methods have also been developed to take advantage of CXI's high sensitivity, such as visualization of the effective atomic number and the three-dimensional temperature. This article reviews the principles, history, and potential applications of PCXI and CXI systems.
APPLIED SCIENCES-BASEL
(2023)
Article
Anatomy & Morphology
Narumi Fukui, Toru Kanahashi, Jun Matsubayashi, Hirohiko Imai, Akio Yoneyama, Hiroki Otani, Shigehito Yamada, Tetsuya Takakuwa
Summary: Based on high-resolution imaging techniques, the morphogenesis of the left atrium was studied in human embryos and fetuses. The left atrium wall has multiple origins and the position of the pericardial reflections determines the borders of the pericardial cavity. The four pulmonary veins enter the dorsal left atrium tangentially, with the right pulmonary veins entering at a greater angle than the left pulmonary veins.
JOURNAL OF ANATOMY
(2023)
Article
Instruments & Instrumentation
Chika Kamezawa, Kazuyuki Hyodo
Summary: This paper investigates the use of lapped Si crystals to enhance x-ray intensity and improve the spatial resolution and contrast noise ratio (CNR) in x-ray images. The results show that using a lapped Si crystal increases x-ray intensity by a factor of 8, reduces spatial resolution by 70%, and increases CNR by 3 times. These findings are important for evaluating the use of optics in different research purposes.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Materials Science, Multidisciplinary
Sol Geo Lim, Jong-Won Lee, Hiroshi Fujihisa, Chang Yeop Oh, Jiyeong Jang, Dohyun Moon, Satoshi Takeya, Michihiro Muraoka, Yoshitaka Yamamoto, Ji-Ho Yoon
Summary: Researchers have successfully synthesized a hydroquinone clathrate structure that can stably capture neon gas at room temperature and atmospheric pressure, and release it at high temperatures. The structure allows for encapsulation of neon gas in the one-dimensional channels of the clathrate framework, with inter-cage migration through the hexagonal entrance. This study has important implications for the storage and controlled release of noble gases in solid materials.
COMMUNICATIONS MATERIALS
(2023)
Article
Multidisciplinary Sciences
Akio Yoneyama, Kotaro Ishiji, Atsushi Sakaki, Yutaka Kobayashi, Masayuki Inaba, Kazunori Fukuda, Kumiko Konishi, Akio Shima, Daiko Takamatsu
Summary: X-ray topography is a powerful method for analyzing crystal defects and strain in crystalline materials non-destructively. However, conventional X-ray topography lacks depth information on defects and dislocations. In this study, we developed a novel three-dimensional micro-X-ray topography technique (3D mu-XRT) that combines Bragg-case section topography with focused sheet-shaped X-rays, enabling non-destructive observation of internal defects and dislocations with a depth accuracy on the order of 1 µm. The visualization of various defects in SiC power device chips demonstrated the potential of 3D mu-XRT for highly sensitive and non-destructive analysis of material crystallinity.
SCIENTIFIC REPORTS
(2023)
Correction
Biochemistry & Molecular Biology
Hiromi Miki, Akio Yoneyama, Keiichi Hirano
Summary: The research visualized the morphological structures of rice grains in precooked products using synchrotron radiation X-ray phase-contrast computed tomography.
Article
Energy & Fuels
Takashi Morimoto, Rikuto Suzuki, Sho Kuromatsu, Takeshi Watanabe, Shinji Koh, Satoshi Takeya, Takaaki Inada, Hiroyuki Kumano
Summary: The addition of Zn-ZnO to TBAB aqueous solution was found to significantly promote nucleation of TBAB hydrate. However, the nucleation-promoting mechanism of Zn-ZnO is still unclear.
GAS SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Applied
M. Graca Dias, Elsa Vasco, Francisco Ravasco, Lufsa Oliveira
Summary: This study estimated the vitamin D intake of "adults" and "elderly" populations in Portugal using the TDS methodology. The results showed that the majority of people had inadequate vitamin D intake, well below the Dietary Reference Values.
Article
Chemistry, Applied
Yanan Wang, Jiachen Shi, Yong-Jiang Xu, Chin-Ping Tan, Yuanfa Liu
Summary: This study investigates the variations in lipid digestion profiles among individuals of different ages using in vitro digestion models. The findings suggest that adults have a more comprehensive lipid digestion compared to infants, and infants tend to release shorter chain length and more saturated free fatty acids during digestion. Additionally, the particle sizes in the stomach of the elderly were consistently larger. This study enhances our understanding of how lipids with different degrees of unsaturation undergo digestion in diverse age groups.
Article
Chemistry, Applied
Hyunjong Yu, Huisu Kim, Pahn-Shick Chang
Summary: Chitosan-pectin emulsion-filled hydrogel (EFH) was developed to enhance the bioaccessibility of lipophilic bioactive compounds through intestinal delivery. The EFH, prepared without crosslinking agents, demonstrated improved mechanical strength and compactness with higher pectin concentration. It retained the emulsion at pH 2.0 and released it at pH 7.4, resulting in enhanced release of free fatty acids and improved bioaccessibility of curcumin.
Article
Chemistry, Applied
Tongze Zhang, Siqi Hong, Jia-Rong Zhang, Pin-He Liu, Siyi Li, Zixian Wen, Jianwei Xiao, Guirong Zhang, Olivier Habimana, Nagendra P. Shah, Zhongquan Sui, Harold Corke
Summary: Lactic acid fermentation significantly affects the morphology and physicochemical properties of proso millet starch, including the formation of surface indentations and small pores, decrease in gelatinization temperatures, and changes in hardness and adhesiveness.
Article
Chemistry, Applied
Liqin Kong, Feng Hong, Peng Luan, Yiping Chen, Yaoze Feng, Ming Zhu
Summary: This study presents a novel impedance biosensor using composite nanomaterials and T1R1 as a signal probe, which can competitively and ultra-sensitively detect umami intensity. The biosensor exhibits exceptional analytical performance and is suitable for food flavor evaluation.
Article
Chemistry, Applied
Kunying Lv, Yixin Yang, Qilong Li, Ran Chen, Liang Deng, Yiwei Zhang, Ning Jiang
Summary: Horse's milk, with its high nutritional value and low allergenic proteins, could be a substitute for cow's milk in infant consumption. A proteomic method was used to identify and compare milk fat globule membrane (MFGM) and whey proteins from different horse breeds. The study found differences in protein composition and functionality, which could support the development of formulas more suitable for human infants.
Article
Chemistry, Applied
Enrique Jacobo Diaz-Montana, Helene Brignot, Ramon Aparicio-Ruiz, Thierry Thomas- Danguin, Maria Teresa Morales
Summary: Sensory perception of virgin olive oil is influenced by phenols and volatiles, which are affected by the composition of the oil and biological factors. This study investigated the effect of saliva and phenols on the release of volatiles, and found that the presence of phenols decreased the release of saturated volatiles.
Article
Chemistry, Applied
Wei Zhou, Rui Zhang, Zhen Cai, Fangfang Wu, Yong Hu, Chao Huang, Kun Hu, Yun Chen
Summary: Environmentally friendly and outstanding pH-responsive cationic starch nanoparticles (CSNP) were prepared from pH-sensitive starch. CSNP exhibited nanosize and regular sphere, highly free-flowing molecular chains, and demonstrated excellent pH responsiveness through multiple emulsion/demulsification transitions.
Article
Chemistry, Applied
Andrea Koo, Vinayak Ghate, Weibiao Zhou
Summary: This study suggests that direct seeding may negatively affect the nutritional quality of crops, causing a decrease in ascorbic acid, vitamin K, and total glucosinolate content.
Article
Chemistry, Applied
Tonghao Du, Yazhou Xu, Xiaoyan Xu, Shijin Xiong, Linli Zhang, Biao Dong, Jinqing Huang, Tao Huang, Muyan Xiao, Tao Xiong, Mingyong Xie
Summary: This study successfully improved the ACE inhibitory activity of black sesame seeds by fermenting them with Lactobacillus Plantarum NCU116 and hydrolyzing them using acid protease. The RF-PSO model was used to predict the ACE inhibitory activity during the hydrolysis process. Eight peptides with ACE inhibitory activity were identified from fermented black sesame seed hydrolysates after separation and screening.
Article
Chemistry, Applied
Yao Liu, Songyi Lin, Kexin Liu, Shan Wang, Qiaozhen Liu, Na Sun
Summary: This study analyzed the structural changes of shrimp proteins during digestion, predicted the immunodominant epitopes, and validated their allergenicity. The results showed that shrimp proteins were degraded into peptides during digestion, but still carried IgE epitopes that trigger allergic reactions.
Article
Chemistry, Applied
Tiantian Fu, Hongwei Cao, Yu Zhang, Xiao Guan
Summary: This study investigates the impact of milling on the active components in rice, with a focus on the stability and bioaccessibility of phenols, VB1, and alpha-GABA during cooking and digestion. The findings show that milling exacerbates the instability of gamma-GABA during cooking and VB1 during digestion, and it affects the bioaccessibility of these active compounds.
Article
Chemistry, Applied
Zhihao Yang, Yanru Hou, Min Zhang, Puxin Hou, Chang Liu, Lu Dou, Xiaoyu Chen, Lihua Zhao, Lin Su, Ye Jin
Summary: This study investigated the molecular mechanism of feeding regimes on lamb flavor by using TMT labeling combined with MS. The results showed that pasture-fed groups had higher levels of amino acids and volatile flavor substances compared to concentrate-fed groups. Additionally, several differentially abundant proteins associated with lamb flavor were identified.
Article
Chemistry, Applied
Zixuan Xie, De Zhang, Junyu Zhu, Qianqian Luo, Jun Liu, Jingtao Zhou, Xiaoyong Wang, Yuqiong Chen, Zhi Yu, Dejiang Ni
Summary: This study investigated the acidification of aroma-enhanced black tea during storage. Analysis of non-volatile substances and organic acids using UPLC-Q-TOF/MS and HPLC revealed a decrease in soluble sugars and amino acids, while an increase in organic acids such as oxalic acid, malic acid, and quinic acid. In vitro experiments further demonstrated that the acidification is a result of the decomposition of sugars and amino acids by heating, as well as the oxidation of aromatic aldehydes. Additionally, the study showed that the taste composition of tea infusion is altered, with reduced amino acids, catechins, soluble sugars, and flavonoids. This research provides a theoretical basis for improving the quality of black tea.
Article
Chemistry, Applied
Lin Wang, Falai Ma, Zihan Li, Yan Zhang
Summary: This study developed time-temperature integrators based on amyloglucosidase@Cu3(PO4)2 nanoflowers for monitoring the freshness of chilled pork. The results showed that the integrators were highly reliable and accurate in predicting the quality of chilled pork.
