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| 1 | Majorization Properties for Certain Classes of Analytic Functions Involving a Generalized Diferential Operator显示文摘In this paper,we introduce new subclasses Sm,j,l p,q,λ [A,B;γ] and Hm,j,l p,q,λ(α,β) of certain p-valent analytic functions defined by a generalized diferential operator.Majorization properties for functions belonging to the classes Sm,j,l p,q,λ [A,B;γ] and Hm,j,l p,q,λ(α,β) are investigated.Also,we point out some new or known consequences of our main results. | Huo TANG Guantie DENG Shuhai LI | 2013 | Journal of Mathematical Research with Applications2013，33，5： | 9 |
| 2 | Coefficient Related Problem Studies for New Subclass of Bi-Univalent Functions Defined by(s,t)-Derivative Operator and Quasi-Subordination显示文摘In this paper we introduce and investigate a new generalized class of bi-univalent functions defined by using(s,t)-derivative operator and quasi-subordination.We obtain the estimates of the first two coefficients|a2|,|a3|and general coefficient|an|(n≥4)by using Faber polynomial expansion for the new class and some of its subclasses.And then we solve Fekete-Szegoprobelm for the newly defined classes. | En AO Shuhai LI Huo TANG | 2021 | Journal of Mathematical Research with Applications2021，41，6： | 2 |
| 3 | Mitochondrial and nuclear changes in hippocampal neurons in a lithium-pilocarpine-induced status epilepticus rat model显示文摘BACKGROUND:Mitochondrial damage plays a key role in neuronal damage. OBJECTIVE:To observe ultrastructural damage to mitochondria and nuclei,as well as caspase-3 expression,in hippocampal CA3 neurons of lithium-pilocarpine-induced status epilepticus rats. DESIGN,TIME AND SETTING:The neuropathological,randomized,controlled study was performed at the Animal Experimental Center,Shandong University,China in May 2008. MATERIALS:A total of 75 healthy,adult,male,Wistar rats were randomly assigned into model (n = 45) and control(n = 30) groups.Lithium-pilocarpine(Sigma,USA) was used in this study. METHODS:Rats in the model group were intraperitoneally injected with lithium chloride(3 mEq/kg), and 24 hours later with pilocarpine(45 mg/kg),to induce seizures for 2 hours.Rats in the control group were intraperitoneally infused with the same volume of saline.Rat hippocampal CA3 tissue was obtained at 3,12,and 24 hours following status epilepticus. MAIN OUTCOME MEASURES:Neuronal changes were observed under an optical microscope. Ultrastructural changes in mitochondria and nuclei were observed using an electron microscope. caspase-3 mRNA levels were quantified by semiquantitative RT-PCR. RESULTS:After 3 hours of status epilepticus,mitochondria with swollen cristae and ruptured membranes were observed by electron microscopy.Nuclei with marginated chromatin were observed after 24 hours status epilepticus.RT-PCR results demonstrated increased caspase-3 expression at 12 hours,and significantly increased expression at 24 hours following termination of status epilepticus.This was in accordance with acidophilia occurrence,as indicated by hematoxylin-eosin staining,and time of ultrastructural damage to nuclei. CONCLUSION:In lithium-pilocarpine-induced status epilepticus rat models,ultrastructural damage to mitochondria in hippocampal neurons occurred during early stages,followed by increased caspase-3 expression and nuclear changes.These results suggested that mitochondrial damage plays a key role in neuronal damage following status epilepticus. | Shuhai Tang Li Zhang Jianying Sun Xiaojun Pan | 2009 | Neural Regeneration Research2009，4，3： | 2 |
| 4 | Cracking the superheavy pyrite enigma:possible roles of volatile organosulfur compound emission显示文摘The global deposition of superheavy pyrite(pyrite isotopically heavier than coeval seawater sulfate in the Neoproterozoic Era and particularly in the Cryogenian Period)defies explanation using the canonical marine sulfur cycle system.Here we report petrographic and sulfur isotopic data(δ^(34)Spy)of superheavy pyrite from the Cryogenian Datangpo Formation(660–650 Ma)in South China.Our data indicate a syndepositional/early diagenetic origin of the Datangpo superheavy pyrite,with ^(34)S-enriched H_(2)S supplied from sulfidic(H_(2)S rich)seawater.Instructed by a novel sulfur-cycling model,we propose that the emission of ^(34)S-depleted volatile organosulfur compounds(VOSC)that were generated via sulfide methylation may have contributed to the formation of ^(34)S-enriched sulfidic seawater and superheavy pyrite.The global emission of VOSC may be attributed to enhanced organic matter production after the Sturtian glaciation in the context of widespread sulfidic conditions.These findings demonstrate that VOSC cycling is an important component of the sulfur cycle in Proterozoic oceans. | Xianguo Lang Zhouqiao Zhao Haoran Ma Kangjun Huang Songzhuo Li Chuanming Zhou Shuhai Xiao Yongbo Peng Yonggang Liu Wenbo Tang Bing Shen | 2021 | National Science Review2021，8，10： | 2 |
| 5 | Some Properties of Certain Subclasses of p-Valent Meromorphic Functions Associated with Quasi-Subordination显示文摘In this paper, we obtain the integral representations and the coefficient estimates for certain new subclasses of p-valent meromorphic functions associated with quasi-subordination.Specially,we obtain the sharp estimates of Fekete-Szeg? inequality. | Aoen Shuhai LI Huo TANG Siqinqimuge | 2018 | Journal of Mathematical Research with Applications2018，38，2： | 1 |
| 6 | Coefficient Estimates for the Subclasses of Analytic Functions and Bi-Univalent Functions Associated with the Strip Domain显示文摘The Salagean operator is used here to introduce a new subclass of analytic functions associated with the strip domain. We obtain the bounds of coefficients and Fekete-szego inequality for functions in this class and coefficient estimates of bi-univalent functions for certain subclasses of this class. The results presented here extend some of the earlier results. | Shuhai LI Huo TANG Li-na MA Xiaomeng NIU | 2017 | Journal of Mathematical Research with Applications2017，37，5： | 1 |
| 7 | A New Class of Harmonic Multivalent Functions Defined by Subordination显示文摘In the present paper,we introduce some new subclasses of harmonic multivalent functions defined by generalized Dziok-Srivastava operator.Sufficient coefficient conditions,distortion bounds and extreme points for functions of these classes are obtained. | Shuhai LI Huo TANG | 2016 | Journal of Mathematical Research with Applications2016，36，5： | 1 |
| 8 | Certain Subclasses of Harmonic Univalent Functions Defined by Convolution and Subordination显示文摘Let SH be the class of functions f = h + ˉg that are harmonic univalent and sensepreserving in the open unit disk U = {z ∈ C : |z| < 1} for which f(0) = f′(0)-1 = 0. In the present paper, we introduce some new subclasses of SH consisting of univalent and sensepreserving functions defined by convolution and subordination. Sufficient coefficient conditions,distortion bounds, extreme points and convolution properties for functions of these classes are obtained. Also, we discuss the radii of starlikeness and convexity. | Shuhai LI Huo TANG En AO | 2019 | Journal of Mathematical Research with Applications2019，39，1： | 0 |
| 9 | Some Properties of Subclasses of Meromorphic Multivalent Functions Defined by Subordination显示文摘In the present paper, we introduce some new subclasses of meromorphic starlike,convex, close-to-convex and quasi-convex functions of β-reciprocal in terms of the linear operator using subordination. We obtain the coefficient estimates, convolution properties, integral preserving properties and inclusion relationships of the classes. The results presented here include several results as their special cases. | Li-na MA Huo TANG Shuhai LI | 2015 | Journal of Mathematical Research with Applications2015，35，1： | 0 |
| 10 | Inclusion Relationships for Certain Classes of p-Valent Functions Involving the Srivastava-Khairnar-More Operator显示文摘In the present paper, we use the methods of differential subordination and convolution to investigate some inclusion properties for certain classes of p-valent analytic functions in the open unit disk, which are associated with the Srivastava-Khairnar-More operator. The results presented here include several previous known results as their special cases. | Huo TANG Guantie DENG Shuhai LI | 2014 | Journal of Mathematical Research with Applications2014，34，2： | 0 |
| 11 | Mitochondrial and nuclear damages and caspase-3 expression in the hippicampal CA3 region of rats with kainic acid induced statuse pilepticus显示文摘BACKGROUND: Some scholars believed that the neuronal injury after status epilepticus is apoptosis,the main evidence is the changes of expressions of various apoptosis releted genes,such as immediate-early gene,p53 gene and genes of bcl-2 family,etc.But there is still no ultrastructural evidence for apoptosis.OBJECTIVE: To observe the ultrastructural damages of mitochondrion and nucleus and the changes of caspase expression in neurons of hippocampal CA3 region in rats with status epilepticus induced by kainic acid.DESIGN: A randomized controlled study.SETTING: Department of Anesthesiology and Department of Neurology,Qilu Hospital of Shandong University.MATERIALS: Seventy-five adult male Wistar rats of 250-300 g.clean degree,were provided by the experimental animal center of Shandong University.Kainic acid was purchased from Sigma Company (USA);rabbit anti-rat polyclonal antibody caspase-3 from Santa Cruz Company(USA).METHODS:The experiments were carried out in the Department of Anesthesiology,Qilu Hospital of Shandong University from October 2005 to February 2006.①The 75 rats were randomly divided into experimental group (n=45)and control group(n=30).②Model establishment,convulsion grading and the judging standards for status epilepticus:Rats in the experimental group were given intraperitoneal injection of kainic acid(10 mg/kg),and those in the control group were injected with saline of the same volume.The time of seizure was recorded and their behavioral manifestations were observed,and the seizure was terminated by intraperitoneal injection of diazepam(10 mg/kg).③Observation under electron microscope:At 3, 12 and 24 hours after status epilepticus respectively,bilateral hippocampal tissues were taken out,semithin sections of about 75 nm were prepared after fixation,dehydration and embedding,and then observed under H-800 transmission electron microscope.④Immunohistochemical detection:Bilateral hippocampi were removed at 3,12 and 24 hours after status epilepticus respectively,the fixation,dehydration,transparence,wax immersion and embedding were performed,then serial sections of CA3 region were immunohistochemically determined by the SABC method.Leica QWinV3 image analytical software was applied,then the average number and average gray value of positive cells were calculated.MAIN OUTCOME MEASURES:Results of observation under electron microscope,that of immunohistochemical staining of neurons in hippocampal CA3 region;Comparison of number of caspase-3 positive cells and gray value.RESULTS: All the 75 Wistar rats were involved in the analysis of results.①Results of observation under electron microscope:At 3 hours after status epilepticus,swelling crista and membranous disintegration were observed under electron microscope.At 24 hours,obvious nuclear changes occurred,and manifested as the side-aggegation of chromatins.②Results of immunohistochemical detection:In the experimental group,the number of caspase-3 positive cells at 3 hours after status epilepticus had no obvious difference as compared with that in the control group(P>0.05):At 12 hours,the number and gray value of caspase-3 positive cells in the experimental group were higher than those in the control group (10.49±0.68 vs.5.33±0.43;45.57±2.27 vs,19.79±0.33,P<0.05),the same results were also observed at 24 hours(37.36±0.57 vs.5.12±0.47;115.24±1.22 vs.18.73±0.42,P<0.01).CONCLUSION:In the rat models of status epilepticus induced by kainic acid,mitochondrial damage was earlier than the increase of caspase-3 expression and nuclear changes,which suggested that mitochondrion was the key link for the neuronal death after status epilepticus. | Shuhai Tang Jianying Sun Xiaojun Pan Li Zhang | 2006 | Neural Regeneration Research2006，1，7： | 0 |
| 12 | Injury of mitochondria and the expressions of fas and bax mRNA in the hippocampus of epileptic rats of different latency显示文摘BACKGROUND: It has been confirmed that Fas and Bax respectively mediate the exogenous and endogenous pathways of neuronal apoptosis, and then mediate the neuronal injury after status epilepticus. OBJECTIVE: To comparatively observe the injury of mitochondrial ultrastructure and the expressions of fas and bax in hippocampal tissue of rats with status epilepticus of different latency. DESIGN: A randomized control study. SETTING: Department of Anesthesiology and Department of Neurology, Qilu Hospital of Shandong University. MATERIALS: Totally 110 male adult SD rats of 260-300 g were used. Kainic acid was purchased from American Sigma Company. METHODS: The experiment was carried out in the Pathological Laboratory of Shandong Academy of Medical Sciences between March and July 2005. ① Totally 100 SD rats were divided into two groups according to the random number table method: intraperitoneal injection group and caudal venous injection group. The rats were given kainic acid injected intraperitoneally (12 mg/kg) and through caudal vein (10 mg/kg) respectively. Each group was observed at 3, 6, 24, 48 and 72 hours after status epilepticus respectively. Ten rats were selected for each time point, including 2 for examination of electron microscope and 8 for the diction of the fas and bax mRNA expressions. The time and manifestations of seizure were observed, and the seizure was lasted for 2 hours, and then it was terminated by intraperitoneal injection of diazepam (10 mg/kg). Another 10 rats were used as the normal control group, and the materials were taken at 24 hours after status epilepticus, 2 of rats for the examination of electron microscope and 8 of them for the reverse transcription-polymerase chain reaction (RT-PCR). ② The ultrastructure of hippocampal neurons and its mitochondria were observed with transmission electron microscope. ③ The fas and bax mRNA expressions were detected with RT-PCR. MAIN OUTCOME MEASURES: The complete form of hippocampal neurons, changes of mitochondrial structure, and the expression of fas and bax mRNA after status epilepticus were observed. RESULTS: All the 110 rats were involved in the analysis of results. ① In the intraperitoneal injection group, the average latency of the occurrence of status epilepticus was (97±11) minutes, mitochondrial swelling in hippocampus was observed under electron microscope, neurons showed apoptosis; In the caudal venous injection group, the latency was (48±13) minutes, hippocampal mitochondria swelled and accompanied by the membranous disintegration, and neurons showed necrosis. ② In the caudal venous injection group, no obvious increases of fas and bax mRNA expressions were observed as compared with the control group (P > 0.05). In the intraperitoneal injection group, the fas and bax mRNA expressions began to increase at 6 hours after status epilepticus (0.13±0.042, 0.29±0.016), reached the peak values at 48 hours (0.78±0.063, 1.04±0.061), and lasted to 72 hours (0.64±0.063, 0.97±0.069) (P < 0.05-0.01). CONCLUSION: The mitochondrial injury of hippocampal neurons in rats with longer latency of status epilepticus is mainly the manifestation of apoptosis, which is milder than in the rats with shorter latency manifested by necrosis, and the fas and bax mRNA expressions in hippocampus are higher than in those with shorter latency. | Shuhai Tang Jianying Sun Xiaojun Pan Li Zhang | 2006 | Neural Regeneration Research2006，1，1： | 0 |
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