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Cation and anion substitution effects on the ultrafast dynamics of interionic interaction in imidazolium based ionic liquids

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Science China Chemistry 2011年第9期54卷 1491-1497页

作者： lu rong WANG Wei YU AnChi Department of Chemistry Renmin University of China Beijing 100872 China

Room-temperature Ionic Liquids(ILs) have numerous unique properties that differ from those of conventional molecular *** the unique properties of ILs have been suggested to origin from their microscopic interionic interaction,detailed dynamics of interionic interaction of ILs has not been fully ***,with the Femtosecond Optical Heterodyne-Detected Raman Induced Kerr Effect Spectroscopy(fs-OHD-RIKES),we measured the ultrafast dynamics of the interionic interaction of three typical imidazolium based ILs,1-butyl-3-methylimidazolium tetrafluoroborate([bmim][BF4]),1-butyl-3-methylimidazolium hexafluorophosphate([bmim][PF6]),and 1-decyl-3-methylimidazolium tetrafluoroborate([dmim][BF4]).We observed several periods of subpicosecond oscillation in their fs-OHD-RIKES *** decomposing their fs-OHD-RIKES signals into four Brownian oscillators in time domain,we explored the cation and anion substitution effects on the ultrafast dynamics of interionic interaction of *** found that the cation substitution affected all the low frequency motions we observed,while the anion substitution only affected the two higher low frequency motions.

关键词： Brownian oscillator ultrafast dynamics interionic interaction ionic liquid Raman induced Kerr effect spectroscopy

Rebinding kinetics of dissociated amino acid ligand and carbon monoxide to ferrous microperoxidase-11 in aqueous solution

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Science China Chemistry 2013年第2期56卷 230-237页

作者： ZHONG RangBo lu rong YU AnChi Department of Chemistry Renmin University of China

The rebinding kinetics of an amino acid ligand to ferrous microperoxidase-11 (MP11) after photolysis of aggregated ferrous MP11 was measured in aqueous solution with femtosecond transient visible absorption spectroscopy. The kinetics of CO rebinding to ferrous MP11 after photolysis of MP11CO was also measured in aqueous solution with femtosecond transient visible absorption spectroscopy. From these measurements, we found that either Val-11 or Lys-13 rebinds to ferrous MP11 exponentially with an 8 picosecond time constant in aggregated ferrous MP11 solution and that CO rebinds to ferrous MP11 nonexponentially with subnanosecond time scale in MP11CO solution. The kinetics of both the amino acid and CO rebinding to ferrous MP11 in MP11 system mimics that in carbon monoxide oxidation activator protein (CooA) or carboxymethyl cytochrome c (CmCytC) system. We also measured the kinetics of CO rebinding to ferrous MP11 in aqueous solution at different MP11CO concentrations and found that MP11CO concentration has an obvious effect on the kinetics of CO rebinding to ferrous MP11, where both the germinate yield and rate of CO rebinding to ferrous MP11 increase with the increase of MP11CO concentration. These findings suggested that the picosecond amino acid ligand rebinding process could disturb the proximal heme-ligand structure that possibly leads to the subnanosecond CO rebinding kinetics in MP11CO, CooACO and CmCytCCO systems.

关键词： femtosecond transient absorption spectroscopy ferrous microperoxidase-11 concentration-dependent recombination kinetics aggregation tendency carbon monoxide

Aggregation Behaviors of Tricarbocyanine Dye in Water and in AOT Reverse Micelles

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Chinese Journal of Chemistry 2011年第3期29卷 405-410页

作者： Zhu, Ruixue lu, rong Yu, Anchi Department of Chemistry Renmin University of China Beijing 100872 China

The photophysical property of the tricarbocyanine dye IR144 has been extensively studied in non-aqueous solvents. However, as a potential near-infrared biomedical imaging probe, the photophysical property of IR144 in water is still little known. So, the aggregation behaviors of IR144 in water with steady-state absorption spectroscopy and integrated polarization dependent femtosecond pump-probe spectroscopy were investigated. Through comparing the absorption spectral bandshape of IR144 in water and in water pool of AOT reverse micelles, It is found that IR144 form dimer aggregates in water even at very low concentration （〈 1.0× 10^- 7 moloL 1）. And the absorption spectrum of the IR144 aggregates always displays a bimodal feature, which is independent of the dye concentration ranging from 1.0 × 10^-7 to 1.0 × 10^-4 mol·L^-1. For better understanding the aggregation behaviors of IR144 in water, we measured the ground state recovery kinetics and the reorientation kinetics of IR144 in water and in water pool of AOT reverse micelles （W0= [H2O]/[AOT], W0=40）. It is found that the fluorescence quantum yield of 1R144 in water is lower than that in water pool of AOT reverse micelles, and the reorientation time of IR144 in water is slower than that in water pool of AOT reverse micelles. Those kinetic measurements also verify that IR144 exists as dimer aggregates in water.

关键词： photophysics photochemistry kinetics IR 144 aggregates AOT reverse micelles

Corneal collagen crosslinking in keratoconus and other eye disease

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International Journal of Ophthalmology(English edition) 2015年第2期8卷 407-418页

作者： Adel Alhayek Pei-rong lu Department of Ophthalmology the First Affiliated Hospital of Soochow University

Keratoconus is a condition characterized by biomechanical instability of the cornea, presenting in a progressive, asymmetric and bilateral way. Corneal collagen crosslinking(CXL) with riboflavin and Ultraviolet-A(UVA) is a new technique of corneal tissue strengthening that combines the use of riboflavin as a photo sensitizer and UVA irradiation. Studies showed that CXL was effective in halting the progression of keratoconus over a period of up to four years. The published studies also revealed a reduction of max K readings by more than 2 D, while the postoperative spherical equivalent(SEQ) was reduced by an average of more than 1 D and refractive cylinder decreased by about1 D. The major indication for the use of CXL is to inhibit the progression of corneal ecstasies, such as keratoconus and pellucid marginal degeneration. CXL may also be effective in the treatment and prophylaxis of iatrogenic keratectasia, resulting from excessively aggressive photo ablation. This treatment has been used to treat infectious corneal ulcers with apparent favorable results. Most recent studies demonstrate the beneficial impact of CXL for iatrogenic ecstasies, pellucid marginal degeneration, infectious keratitis, bullous keratopathy and ulcerative keratitis. Several long-term and short-term complications of CXL have been studied and documented. The possibility of a secondary infection after the procedure exists because the patient is subject to epithelial debridement and the application of a soft contact lens. Formation of temporary corneal haze,permanent scars, endothelial damage, treatment failure,sterile infiltrates, bullous keratopathy and herpes reactivation are the other reported complications of this procedure.

关键词： keratoconus collagen corneal cross-linking ultraviolet radiation and riboflavin

Compound-honeysuckle-induced drug eruption with special manifestations:A case report

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World Journal of Clinical Cases 2022年第22期10卷 8018-8024页

作者： Li-Feng Zhou rong lu Department of Dermatology The 942nd Hospital of the People's Liberation Army Joint Logistic Support ForceYinchuan 750004Ningxia Hui Autonomous RegionChina Department of Pathology The 942nd Hospital of the People's Liberation Army Joint Logistic Support ForceYinchuan 750004Ningxia Hui Autonomous RegionChina

BACKGROUND The clinical manifestations of drug eruption are complex and diverse,which can lead to missed diagnosis or *** clinical manifestations of drug eruption caused by compound honeysuckle have not been *** SUMMARY A 20-year-old man was admitted to our department of dermatology due to erythema and papules on the chest and abdomen with pruritus for 3 *** next day after taking compound honeysuckle granules,the patient suddenly developed a rash and intense itching on his chest and *** examination revealed diffuse red needle-cap size macules and papules with welldefined borders on the chest and abdomen,and discoloration after finger *** abnormality was observed in other areas of the *** skin scratch was *** blood cells,eosinophil count and eosinophil ratio were higher than *** examination of the skin lesions on the left abdomen revealed intercellular edema,blurred focal basal cell layers,and focal lymphocyte infiltration in the superficial dermis and perivascular *** showed CD3+,CD4+and CD8+T *** diagnosis was drug eruption with special manifestations induced by compound *** skin lesions completely subsided without pruritus after 2 wk of antihistamine and hormone ***-up for>1 mo showed no *** Chinese patent medicine compound honeysuckle granules can induce allergic reaction and rare skin damage.

关键词： Drug eruption Drug dermatitis Blaschko line Compound honeysuckle Allergic reaction Case report

Successful treatment of Morbihan disease with total glucosides of paeony:A case report

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World Journal of Clinical Cases 2022年第19期10卷 6688-6694页

作者： Li-Feng Zhou rong lu Department of Dermatology The 942nd Hospital of the PLA Joint Logistic Support ForceYinchuan 750004Ningxia Hui Autonomous RegionChina Department of Pathology The 942nd Hospital of the PLA Joint Logistic Support ForceYinchuan 750004Ningxia Hui Autonomous RegionChina

BACKGROUND Morbihan disease is a rare cutaneous disorder characterized by non-pitting edema and erythema of the upper two-thirds of the *** severe cases,orbital and facial contour changes may affect the visual field,and there is no guideline for the standard treatment of this *** treatment methods have been reported to be associated with long medication cycle,easy recurrence after drug withdrawal,and multiple adverse *** SUMMARY A 55-year-old Chinese woman presented to our hospital with non-pitting edema and erythema of the upper two thirds of her face for 5 *** examination showed obvious edema and erythema on the upper *** boundary was unclear,the lesions were hard and non-pitting,and infiltration was obvious by *** examination revealed mild hyperkeratosis of the epidermis,nodular inflammatory lesions in the dermis,epithelioid granuloma,and inflammatory cell infiltration with lymphocytes and histiocytes around skin appendages and blood *** blue staining,acid fast staining,silver staining and periodic acid-Schiff staining were *** patient was diagnosed with Morbihan *** was treated with prednisone acetate and tripterygium wilfordii polyglycoside tablets for 4 mo,and the edema was slightly reduced,but transaminase levels were significantly *** glycyrrhizin capsules were administered for liver protection for 1 mo;however,facial edema did not significantly improve and transaminase levels continued to *** glucosides of paeony capsules were then administered for 4 mo,and transaminase level returned to normal and the patient’s facial edema disappeared *** Total glucosides of paeony has a remarkable effect in Morbihan disease,without adverse reactions.

关键词： Morbihan disease Morbihan syndrome Total glucosides of paeony Prednisone acetate Tripterygium wilfordii Case report

Theoretical Description for the Focused Parametric Field After Inserting a Sample

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Chinese Physics Letters 2001年第8期18卷 1085-1087页

作者： ZHANG Dong lu rong-rong GONG Xiu-Fen State Key Laboratory of Modern Acoustics Institute of AcousticsNanjing UniversityNanjing 210093 Department of Electrical Engineering Tohoku UniversitySendai 980-8579Japan

In the parabolic and quasi-linear approximations,a theoretical description for the acoustical parametric field from a focusing source after inserting a sample is derived by using superposition method of Gaussain *** model takes into consideration of attenuation,diffraction and nonlinear *** numerical computations of the axial sound pressure amplitude curves for the difference frequency sound after insertion of a sample are *** results indicate that this new model can be extended to measure or image the nonlinear parameter in the focused field.

关键词： field. nonlinear parabolic

Investigation of the Parametric Field from a Focusing Source by Using Superposition of Gaussian Beams

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Chinese Physics Letters 2000年第11期17卷 812-814页

作者： ZHANG Dong GONG Xiu-Fen lu rong-rong State Key Laboratory of Modern Acoustics Institute of AcousticsNanjing UniversityNanjing 210093

The superposition method of Gaussian beams is extended to describe the acoustical parametric field from a focusing *** axial sound pressure of the difference frequency wave 1MHz generated due to the interaction of two primary wave 3.5 and 4.5MHz is theoretically calculated by using 10 items of Gaussian *** results coincide well with the calculated results except for the case at the vicinity of the focusing source.

关键词： functions. Gaussian wave

A separation form of unified convergence theorem

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Applied Mathematics(A Journal of Chinese Universities) 2008年第1期23卷 79-82页

作者： luO Lai-zhen LI rong-lu Dept. of Math. Harbin Inst. of Tech. Harbin 150006 China.

In this paper, by introducing isometrically Pc0 property a separation form of convergence theorem is presented and the results generalize and unify several interesting conclusions in recent years.

关键词： quasi-normed group infinite matrix Antosik-Mikusinski theorem.