Efficient removal of Al(Ⅲ)and P507 from high concentration MgCl_(2)solution based on in-situ reaction strategy

For a highly efficient recycling of a wastewater containing a high concentration of MgCl_(2),Al(Ⅲ)and P507 were scheduled to be removed in advance.In this study,the in-situ removal of Al(Ⅲ)and P507 from a high concentration MgCl_(2)solution at different pH values and Al/P molar ratios was investigated.The results showed that P507 formed organic complexes of Al_(x)(OH)_y^(Z+)-P507 at pH of 2.0-4.0.At pH of 4.0-5.0,Al(Ⅲ)precipitated and transferred into Al(OH)_(3)with a flocculent amorphous morphology.Active sites on the Al(OH)_(3)surface enhanced the removal efficiency of P507.At pH of 6.0-6.5,Al(Ⅲ)and Mg(Ⅱ)formed layered crystalline Al(OH)_(3)and MgAl_(2)(OH)_(8with)small pore channels and fewer active sites,resulting in a reduced removal efficiency of P507.When the Al/P molar ratio exceeded 13 and the pH was between 4.0 and 5.0,the removal rates of both Al(Ⅲ)and P507 were higher than98%,while the concentration loss of Mg(Ⅱ)was only 0.2%-0.9%.

广东西樵山40—50 ka B P地质遗迹与古人类活动新发现

1958—1999年,在广东省佛山市南海区西樵镇一带发现了众多记录了史前人类活动的石器地点,石器中包括双肩石器和细石器。迄今为止,“西樵山遗址”被认定是4—7 ka B P的大型新石器时期采石场和加工场。2011—2022年,笔者经多次地质遗迹和地质环境调查,在西樵山东南麓富贤村北面发现了良好的第四纪地层剖面。地质探槽剖面测量和地质年代学研究表明:富贤地点存在2套原始沉积地层:上部为第四纪全新世沼泽相地层,AMS14C校正年龄为5052—5409 a B P;下部为第四纪晚更新世冲积-洪积相地层,AMS14C校正年龄为38420—40502 a B P,OSL (光释光)年龄为41.977—43.796 ka B P;在晚更新世地层中发现2层含旧石器层,下部A1层主要石器类型有较大型刮削器、尖刃器、舌型刃器及小型石片工具,如各类刮削器、锯齿刃器、凹缺器、石刀、使用石片、石核等,包括带铤斧型小石刀;上部A2层明显出现更多石刀类型且常常附带修背和修铤工作,其中一件用于生产细小长石片的原始楔形石核引人关注。据平均沉积速率计算,下部A1石器层年龄为46.511—47.325 ka B P,上部A2石器层年龄为41.977—42.167 ka B P;距今大于5 ka的全新世沉积物中的石制品数量虽少,但器物类型仍具有明显继承性与发展性特点。本文的发现更新并延伸了西樵山国家地质公园和“西樵山文化”的内涵,首次突破了珠江三角洲地区有确切年代的晚更新世旧石器遗存的纪录,追踪到大约40—50 ka现代人在华南沿海的足迹,揭示了同期石器工业的面貌及其文化内涵的发展特征和演变。研究表明,在MIS3间冰段相对湿热时期以及MIS2相对干冷阶段,富贤地点的古人类面临环境变化的挑战而开启了新的生计模式,这对于揭示现代人对全球和区域环境变化的响应与适应的科学问题具有重要意义。

共表达甲状腺转录因子1与p40的非小细胞肺癌患者临床病理特征分析

目的探讨共表达甲状腺转录因子1(TTF-1)和p40的非小细胞肺癌(NSCLC)患者的临床病理特征。方法收集7例共表达TTF-1和p40的NSCLC患者的资料,回顾性分析其临床特征、病理形态、免疫表型及分子特征,并复习相关文献。结果患者中位年龄58岁,多为男性且吸烟者;影像显示为外周型肿块。肿瘤细胞呈实性巢状排列,瘤细胞呈圆形、卵圆形或多角形,胞质透明或嗜酸性,核分裂象>10个/10HPF;3例可见脉管内癌栓。同一群肿瘤细胞同时表达TTF-1和p40,CK7、p63、CK5/6和napsinA呈灶性或弥漫表达,增殖指数Ki-67阳性10%~90%。2例采用ARMS-PCR法分别检测到表皮生长因子受体(EGFR)18号外显子G719A/S/C突变和21号外显子L858R突变,1例采用二代测序法检测到TPM3-ROS1融合突变和ROS1(G2032R)突变。随访1~46个月,2例患者分别于22、46个月死亡,3例患者出现颈部淋巴结或脑转移。结论共表达TTF-1和p40的NSCLC具有独特的临床病理特征,临床进展快,预后差,可能是一种新的肿瘤实体。

抗原修复时间对不同克隆号P40免疫组化染色结果的影响

目的:探讨抗原修复时间对不同克隆号的P40免疫组化染色结果的影响。方法:选择本科室P40免疫组化染色异常的胸水细胞沉渣包埋蜡块,3μm连续切片4张,按抗原修复时间不同分为两组(A组抗原修复40 min,B组抗原修复80 min),每组两张切片分别滴加C3B4和MXR010两种不同克隆号的P40抗体,进行免疫组化染色对比实验。结果:A组的C3B4出现胞浆胞膜中度非特异染色,而MXR010没有出现非特异染色。B组的C3B4出现胞浆胞膜高度非特异染色,而MXR010出现胞浆胞膜轻度非特异染色。同一克隆号,A组和B组相比,随着抗原修复时间的延长,MXR010从无非特异染色变为轻度非特异染色,而C3B4从中度非特异染色加重为高度非特异染色。结论:抗原修复时间对不同克隆号的P40免疫组化染色结果会产生影响,随着抗原修复时间的延长,越容易出现非特异染色。选择适当的抗原修复时间和特异性好的抗体,可以减少免疫组化的非特异染色。

Scattering of plane P waves by circular-arc layered alluvial valleys: An analytical solution

An analytical solution for scattering of plane P waves by circular-arc layered alluvial valleys was derived by Fourier-Bessel series expansion technique, and the solution was utilized to analyze the effects of alluvial sequence and their relative stiffness on the scattering of incident waves.

甲状腺转录因子-1、细胞角蛋白7、p63、p40在非小细胞肺癌患者中的表达及与分化程度的关系

目的探讨甲状腺转录因子-1(TTF-1)、细胞角蛋白7(CK7)、p63、p40在非小细胞肺癌(NSCLC)患者中的表达及与分化程度的关系。方法选取107例NSCLC患者和100例肺部良性疾病患者,分别作为观察组和对照组。比较两组患者及不同分化程度NSCLC患者的TTF-1、CK7、p63、p40表达情况,并比较不同分化程度NSCLC患者的临床特征。采用Logistic回归模型分析NSCLC低分化的影响因素。结果观察组患者TTF-1、CK7阳性表达率均明显高于对照组,差异均有统计学意义(P﹤0.01)。低分化NSCLC患者TTF-1、CK7阳性表达率均明显高于中高分化患者,差异均有统计学意义(P﹤0.01)。低分化NSCLC患者肿瘤直径≥5 cm、淋巴结转移比例均明显高于中高分化患者,差异均有统计学意义(P﹤0.01)。多因素Logistic回归分析结果显示,TTF-1阳性表达、CK7阳性表达及淋巴结转移均是NSCLC低分化的危险因素(P﹤0.01)。结论NSCLC患者中TTF-1、CK7阳性表达率均较高,且TTF-1、CK7表达情况与NSCLC患者的分化程度有关。

Existence of Solutions for S-L Singular Boundary Value Problems with p-Laplacian Operators

The existence of solutions for singular nonlinear two point boundary value problems subject to Sturm Liouville boundary conditions with p Laplacian operators is studied by the method of upper and lower solutions. The proof is based on an application of Schauder’s fixed point theorem to a modified problem whose solutions are that of the original one. At the same time, Arzela Ascoli theorem is used to prove that the defined operator N is a compact map.

Existence of Multiple Positive Solutions for Higher-Order p-Laplacian Boundary Value Problems

The existence of multiple positive solutions for a class of higher order p Laplacian boundary value problem is studied. By means of the Leggett Williams fixed point theorem in cones, existence criteria which ensure the existence of at least three positive solutions of the boundary value problem are established.

P40及TTF-1共表达非小细胞肺癌7例临床病理分析

目的:P40及甲状腺转录因子1(thyroid transcription factor-1,TTF-1)被广泛应用于肺鳞状细胞癌和肺腺癌的鉴别诊断,两者共表达的非小细胞肺癌(non-small cell lung cancer,NSCLC)病例则极为罕见。本研究旨在探讨P40及TTF-1共表达NSCLC的临床及病理学特点。方法:收集山东大学附属威海市立医院2019年5月至2023年9月确诊的7例P40及TTF-1共表达NSCLC患者,分析其临床及病理学特点,采用基因检测及免疫组织化学染色检测相关指标表达情况,并随访患者。结果:7例患者均为男性,年龄57~80(中位数71)岁,除1例外其余6例均有吸烟史;6例患者肿瘤为外周型,1例为中央型;肿物长径为2.0~8.5(中位数5.8)cm。5例患者出现肿瘤转移。2例病死患者第1次确诊至死亡的时间间隔分别为12和55个月。HE染色示肿瘤分化差,肿瘤细胞排列紧密,呈片状、巢团样分布,可见坏死及炎细胞浸润,肿瘤细胞大小不一,形态多样,细胞质多呈嗜酸性,细胞核大,形状不规则,核仁易见。免疫组织化学染色可见P40、TTF-1、P63、细胞角蛋白(cytokeratin,CK)7、CK5/6广泛阳性表达,而天冬氨酸肽酶A(Napsin A)基本上为阴性表达。基因检测除1例为TP53突变外,其余无突变。结论:P40及TTF-1共表达NSCLC是一种罕见的亚型,其发病率低,但恶性程度高,好发于有吸烟史的老年人,大部分病例发现时即偏向晚期,病理结果显示其为既不属于腺癌也不属于鳞状细胞癌的低分化肿瘤。

Exploration of As(Ⅲ)/As(V) Uptake from Aqueous Solution by Synthesized Calcium Sulfate Whisker

Although common calcium-containing minerals such as calcite and gypsum may fix arsenic, the interaction between modified calcic minerals and arsenic has seldom been reported. The uptake behavior of As(Ⅲ)/As(V) from aqueous solutions by calcium sulfate whisker(CSW, dihydrate or anhydrite) synthesized through a cooling recrystallization method was explored. A series of batch experiments were conducted to examine the effect of p H, reaction time, whisker dosage, and initial As concentration. X-ray diffraction(XRD) and scanning electron microscopy(SEM) were used to characterize the samples prepared. The results showed that p H of the aqueous solution was an important parameter for As(Ⅲ)/As(V) uptake, and an excellent removal efficiency could be achieved under strongly alkaline condition. The data from batch experiments for reaction of As(V) with calcium sulfate dihydrate whisker(CSDW) and calcium sulfate anhydrous whisker(CSAW) were well described with extended Langmuir EXT1 model, from which theoretic maximum adsorption capacity of 46.57 mg As(V)·(g CSDW)-1and 39.18 mg As(V)·(g CSAW)-1were obtained. Some calcium arsenate solids products,such as Ca As O3(OH)(weilite, syn), Ca3(As O4)2(calcium arsenate), Ca O–As2O5, Ca–As–O, Ca5(As O4)3OH·x H2O(calcium arsenate hydroxide hydrate), and Ca H(As O4)·2H2O(hydrogen calcium arsenic oxide hydrate), were detected at p H = 12.5 through XRD analysis. This indicates that the interaction mechanism between As(V) and CSW is a complex adsorption process combined with surface dissolution and chemical precipitation.

Scattering of plane P waves by a semi-cylindrical hill: analytical solution

An analytical solution for scattering of plane P waves by a semi-cylindrical hill was derived by using the wave function expansion method, and convergence of the solution and accuracy of truncation were verified. The effect of incident frequency and incident angle on the surface motion of the hill was discussed, and it was shown that a hill greatly amplifies incident plane P waves, and maximum horizontal displacement amplitudes appear mostly at the inclined incidence of waves, which are located at the half-space; and maximum vertical displacement amplitudes emerge mostly at the vertical incidence of waves, which are situated at the hill.

MULTIPLE SOLUTIONS FOR THE p&q-LAPLACIAN PROBLEM WITH CRITICAL EXPONENT

In this paper, we study the existence of multiple solutions for the following nonlinear elliptic problem of p＆q-Laplacian type involving the critical Sobolev exponent：{-△pu-△qu=│u│^p＊-2u＋μ│u│^r-2u in Ω u│δΩ=0,where Ω belong to R^N is a bounded domain,N〉p,p^＊=Np/N-p is the critical Sobolev exponent and μ 〉0. We prove that if 1 〈 r 〈 q 〈 p 〈 N, then there is a μ0 〉 0, such that for any μ∈ （0, μ0）, the above mentioned problem possesses infinitely many weak solutions. Our result generalizes a similar result in [8] for p-Laplacian type problem.

EXISTENCE OF PERIODIC SOLUTIONS FOR A DIFFERENTIAL INCLUSION SYSTEMS INVOLVING THE p(t)-LAPLACIAN

We study a nonlinear periodic problem driven by the p（t）-Laplacian and having a nonsmooth potential （hemivariational inequalities）. Using a variational method based on nonsmooth critical point theory for locally Lipschitz functions, we first prove the existence of at least two nontrivial solutions under the generalized subquadratic and then establish the existence of at least one nontrivial solution under the generalized superquadratic.

A series solution for surface motion amplification due to underground group cavities:Incident P waves

A series solution for surface motion amplification due to underground group cavities for incident plane P waves is derived by Fourier-Bessel series expansion method. It is shown that underground group cavities significantly am-plify the surface ground motion nearby. It is suggested that the effect of subways on ground motion should be con-sidered when the subways are planned and designed.

Study on the Electrical Conductivity of 0.025 mol NaCl Solution at 0.25-3.75 GPa and 20-370℃

The electrical conductance of 0.025 mol NaCl solution was measured at0.25-3.75 GPa and 20-370℃. As shown by the results, the conductance increases with temper-ature, and there is a liner relation between the reciprocal of temperature and the logarithm ofthe conductance but their slopes are different at different pressures. The relations between theconductance and pressure is rather complex and there are some discontinuities: in the range of2.25-3.75 GPa, the conductance increases with the pressure; in the range of 1.25-2.0 GPa, theconductance is not related to the pressure; and at a pressure of 0.75 GPa, the conductance ishigher than that at the pressures nearby. This reflects that the NaCl solution has rather differentproperties of electronic chemistry at various pressures, and probably is an important cause forthe existence of the layers with high electrical conductance and low velocity in the Earth's crustand mantle.

MULTIPLE POSITIVE SOLUTIONS OF INHOMOGENEOUS SEMILINEAR ELLIPTIC EQUATIONS IN UNBOUNDED DOMAINS IN R^2

In this paper,we consider the existence of multiple positive solutions of the following inhomepeneous semilinear elliptic equation where λ> 0.ed and ω is a bounded smooth open set in R2,h(x)∈ L 2(Ω),h(x) 0.f(t)∈ C1([0.+∝)) satisfies f(0) =f'(0)=0.fn(t) exists and fn(t)> 0.0<f(t) <Cexp(at) for some constants C,α> 0.0 <u <2 and t∈(0.+c),f(t)<0tf'(t) for someθ ∈(0,1). By looking for the local miaimum of the corresponding energy functional we tain the first minimum positive solution and by applying mountain pass lemma around the ndboum positive solution we prove the following result:

EXISTENCE AND MULTIPLICITY OF POSITIVE SOLUTIONS FOR A FOURTH-ORDER P-LAPLACE EQUATIONS

The solvability of one dimensional fourth-order p-Laplace equations of the type [GRAPHICS] where, g(v) \ v \ (p-2) v, p > 1 is investigated. With cone compression/extension theorem, some existence and multiplicity results of positive solution have been required according to different growth condition of nonlinear form f at zero and at infinity.

Existence and Multiplicity of Solutions for Quasilinear p(x)-Laplacian Equations in R^N

We establish some results on the existence of multiple nontrivial solutions for a class of p(x)-Lap-lacian elliptic equations without assumptions that the domain is bounded. The main tools used in the proof are the variable exponent theory of generalized Lebesgue-Sobolev spaces, variational methods and a variant of the Mountain Pass Lemma.

NECESSARY AND SUFFICIENT CONDITIONS FOR THE EXISTENCE OF NONNEGATIVE SOLUTIONS OF INHOMOGENEOUS p-LAPLACE EQUATION

Let Ω be a smooth bounded domain in R^n. In this article, we consider the homogeneous boundary Dirichlet problem of inhomogeneous p-Laplace equation --△pu = ｜u｜^q-1 u ＋ λf（x） on Ω, and identify necessary and sufficient conditions on Ω and f（x） which ensure the existence, or multiplicities of nonnegative solutions for the problem under consideration.

共表达TTF-1和p40高分化肺腺癌患者临床病理分析

目的 分析共表达甲状腺转录因子-1(TTF-1)和p40高分化肺腺癌患者的临床病理特征及诊治方法。方法回顾性选取2022年至2023年温岭市第一人民医院收治的3例共表达TTF-1和p40的高分化肺腺癌患者为研究对象,分析其临床表现、手术方法、病理学特征等资料。结果 3例患者中男1例,女2例;年龄26、23、71岁;均无吸烟史,影像学检查示2例为纯磨玻璃结节,1例为磨玻璃密度和实性密度均有的混杂性结节,病灶长径为0.5、0.5、1.0 cm。2例行胸腔镜下肺楔形切除术,1例行肺固有段切除+纵淋巴结切除术,均无并发症。显微镜下见肿瘤细胞呈贴壁样生长,细胞排列紧密,细胞核增大、深染,细胞质增多,未见明显病理性核分裂象,肺纤维间隔增宽,肌纤维母细胞增生伴慢性炎细胞浸润。肿瘤细胞TTF-1、NapsinA、p63、p40阳性,CK5/6阴性,p53野生型,Ki-67增殖指数低。术后随访24、11、6个月,均未见复发和转移。结论 共表达TTF-1和p40高分化肺腺癌病例罕见,临床表现并无特异性,明确诊断需结合组织病理学形态及免疫组化结果,完整手术切除后可取得良好的临床结果。