Optimized OTFT structures possessed a field-effect mobility of 0

Optimized OTFT structures possessed a field-effect mobility of 0.33 cm(2) V(-1) s(-1), a threshold voltage of -4 V, a subthreshold slope of 1.5 V/decade, and an on/off current ratio of 1.2×10(6).”
“We sought to identify the most typical patterns of change in sense of coherence (SOC) in adulthood.

This prospective population-based Health and Social Support (HeSSup) study

was based on four age cohorts including men and women initially aged 20-24 years (n = 4,682), 30-34 years (n = 4,248), 40-44 years (n = 4,598), and 50-54 years (n = 4,997). SOC was assessed at baseline and at the Dinaciclib manufacturer 5-year follow-up point. Factor Mixture Modeling was used to identify the latent classes of persons whose mean changes in SOC were similar over time.

Three development classes were supported by the data. In all age cohorts, the largest class consisted

of those people whose SOC was high at baseline and increased thereafter (46-58% of participants depending on the age group). A class of high SOC with a decreasing trend and that of low SOC with an increasing trend were also found. In all age groups, the rank-order stability was high in the first development class (0.84-0.98) but low in other classes (0.35-0.44).

This analysis shows continuous increase in the level of SOC over time to be common in adulthood, irrespective of age. High SOC, rather Pinometostat than higher age, seems to determine a stable development of the SOC.”
“Rescue ICSI can induce a high rate of 3 pronuclei (PN) formation from double insemination in eggs already fertilized by IVF but lacking signs of normal pronuclear formation. This study was performed to determine whether Vorinostat Epigenetics inhibitor the number of 3PN embryos could be reduced by using the polarization microscope for rescue intracytoplasmic sperm injection (ICSI). As a study group, after conventional insemination, 81 unfertilized mature oocytes from 11 couples were checked for the number of spindles using the polarization microscope. One spindle

(82.7%) or two spindles (17.3%) were observed in this group. Rescue ICSI was only performed on the unfertilized oocytes showing one spindle. In the control group, 87 mature oocytes which lacked visualization of any fertilization signs were selected for rescue ICSI and none of them underwent observation of the spindle. After rescue ICSI, the normal fertilization rate in the study group was significantly higher than in the control (68.7% versus 43.7%; P = 0.0032). The rate of 3PN or 4PN embryos was significantly decreased in the study group with one spindle compared with the group without observation of the spindle (4.5% versus 26.4%; P = 0.0004). (C) 2012, Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.”
“We report on the photocurrent response of hydrogenated nanocrystalline silicon (nc-Si:H) thin films under external bias voltages.

1 % octenidine/2 % phenoxyethanol,

is a widely used antis

1 % octenidine/2 % phenoxyethanol,

is a widely used antiseptic in modern wound management. It is considered to CCI-779 price have a very low allergenic potential. Thus far, neither allergic nor irritant contact dermatitis to the product has been described.

Patients and methods: Chronic wounds in 251 patients were treated with Octenisept (R); 11 developed signs of contact dermatitis. The symptoms improved after discontinuation of the antiseptic. Eight of these patients were patch tested to the antiseptic and its components.

Results: The eight patients all showed a positive reaction to the product. In at least three cases a reaction to the components cocamidopropyl betaine and phenoxyethanol was found, but not to octenidine dihydrochloride.

Conclusions: In this cohort, more than three percent of the treated patients

developed a contact dermatitis to the antiseptic. However, the differentiation between allergic and irritant contact dermatitis towards the ingredients of the antiseptic remains problematic.”
“Several species of Senna are well known for their therapeutic properties, being used in folk medicine to treat throat inflammation and constipation. In this regard, the anti-inflammatory, laxative and intestinal motility effects of different extracts of Senna macranthera (Colladon) H. Irwin and Barneby leaves were determined. The hexane extract significantly reduced carrageenan-induced paw oedema selleck screening library in rats in a manner similar to that of sodium diclofenac. A laxative effect was observed for the methanolic and hexane extracts comparative click here to the standard drug

bisacodyl; however, only the hexane extract increased the intestinal motility in the studied period. Moreover, the extracts were evaluated for their antioxidant activity and the ethyl acetate extract presented a pronounced activity comparable to the standard rutin. Phytochemical screening was also performed and phenolic compounds like flavonoids, tannins and coumarins were observed in all extracts except for the hexane extract, which instead presented anthrones, triterpenes and steroids in its composition. The HPLC profile showed the presence of the anthraquinone emodine in all tested extracts.”
“Persistent parvovirus B19 (PVB) infection has been reported sporadically in immunocompromised patients including hematopoietic stem cell and solid organ transplant recipients. However, the pathogenesis of persistent infection has yet to be fully elucidated. We report here a patient with multiple myeloma developing red cell aplasia during the hematopoietic recovery after allogeneic hematopoietic stem cell transplantation (HSCT) caused by PVB. The patient had already had PVB viremia before transplantation and remained asymptomatic. The route of PVB transmission was considered to be direct contact with the patient’s family member with primary PVB infection 1month before transplantation. Treatment with intravenous immunoglobulin resulted in prompt resolution of anemia.

06% The prevalence of rheumatic complaints in rural Iran is very

06%. The prevalence of rheumatic complaints in rural Iran is very high and needs attention in the curricula of medical schools and in the planning of rural health care by the government.”
“Administrative data provide a rich resource for improving our understanding of individuals with substance use disorders. The validation of administrative proxies

for moderate or high risk alcohol or drug (AOD) use could enhance the ability to carry out rigorous observational research (for example, for use in the construction of comparison groups). This study used receiver operating characteristic (ROC) curve techniques to assess how well AOD-related administrative indicators predicted self-reported AOD use obtained from AUDIT/DAST screening scores. An administrative AOD indicator, derived from a combination Mocetinostat of medical encounter and billing data, arrest records, and publicly funded AOD-related services data, demonstrated discrimination in the acceptable range MEK inhibitor (AUC: 0.72-0.78) for identifying self-reported AOD use consistent with potential need for either (1) any AOD-related intervention, or (2) intensive AOD-related intervention or treatment. These findings held up in two distinct samples: a statewide Medicaid-only sample and a single-site mixed-payer

sample that included the uninsured. Our findings suggest that indicators of AOD-related problems derived from administrative data can be useful for identifying moderate or high risk AOD use in a research context. The findings further suggest that proxies for substance use disorders, such as those evaluated here, can enhance future observational studies intended to improve health care for this this website population. (C) 2010 Elsevier Ireland Ltd. All rights reserved.”
“Polyaniline salt was synthesized through the chemical oxidation

of aniline with sodium persulfate as the oxidant and didecyl ester of 4-sulfophthalic acid via three different polymerization pathways (aqueous, emulsion, and interfacial). In these polymerization processes, the ester acted as a novel plast dopant and as an emulsifier. The yield, conductivity, and number of ester units present in the polyaniline salts were determined. A polyaniline salt prepared by emulsion polymerization was soluble in chloroform and showed excellent solution-processing properties. Polyaniline samples prepared by aqueous or interfacial polymerization were not soluble in chloroform. A soluble polyaniline salt was successfully synthesized through the washing of an organic layer containing the polyaniline salt with water in emulsion polymerization. X-ray diffraction spectra of polyaniline salts prepared by the three different methods showed an ordered, layer-type supramolecular structure. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 2704-2711, 2010″
“The objective of this study was to compare the prevalence of musculoskeletal complaints and rheumatic disorders in Caucasians and Turks in an identical environment.

Procedures-After induction of anesthesia with isoflurane,

Procedures-After induction of anesthesia with isoflurane,

each snake was instrumented with an arterial catheter connected to a pressure transducer and oscilloscope to obtain invasive measurements of systolic (SAP), diastolic (DAP), and mean (MAP) arterial blood pressure Selleckchem Volasertib as well as a pressure waveform. A cuff connected to an oscillometric device was placed on the tail immediately distal to the vent for noninvasive measurements. Heart rate, respiratory rate, and invasive and noninvasive measurements of SAP DAP and MAP were obtained every 5 minutes for 45 minutes. Delivered isoflurane concentration was increased in 15-minute increments to induce hypotension. Repeatability of each device and fixed and proportional biases between devices were calculated.

Results-Throughout most of the measured ranges of blood pressures, the oscillometric unit overestimated the SAP and underestimated the DAP and MAP compared with respective direct measurements. When

the invasively determined SAP was > 100 mm Hg, the oscillometric unit underestimated all 3 variables. Fixed bias was significant for SAP and DAP and proportional bias was significant for SAP and MAP

Conclusions and Clinical Relevance-When using an oscillometric blood pressure monitor on anesthetized boid snakes, veterinarians can potentially monitor changes in blood pressure, although the displayed readings may underestimate DAP and MAP and overestimate SAP Indirect measurements of blood pressure made with

the oscillometric device cannot substitute for direct measurements. (J Am Vet 4SC-202 research buy Med Assoc 2009;234:625-630)”
“Objectives: We studied mortality in two separate cohorts of workers in abattoirs (N = 4996) and meat processing plants (N = 3642) belonging to a meatcutters’ union, because they were exposed to viruses that cause cancer in food animals, and also to chemical carcinogens at work.

Methods: Standardized mortality ratios (SMRs) and proportional mortality ratios (PMRs) were estimated for each cohort as a whole and in subgroups defined by race and sex, using the US general population mortality rates for comparison. Study subjects were followed up from January 1950 to December 2006, during which Stem Cells & Wnt inhibitor time over 60% of them died.

Results: An excess of deaths from cancers of the base of the tongue, esophagus, lung, skin, bone and bladder, lymphoid leukemia, and benign tumors of the thyroid and other endocrine glands, and possibly Hodgkin’s disease, was observed in abattoir and meat processing workers. Significantly lower SMRs were recorded for cancer of the thymus, mediastinum, pleura, etc., breast cancer, and non-Hodgkin’s lymphoma.

Conclusion: This study confirms the excess occurrence of cancer in workers in abattoirs and meat processing plants, butchers, and meatcutters, previously reported in this cohort and other similar cohorts worldwide.

The expansion of the threatened population placed greater emphasi

The expansion of the threatened population placed greater emphasis on the reexamination of how we vaccinate against Bacillus anthracis. The currently-licensed Anthrax Vaccine, Adsorbed (AVA) and Anthrax Vaccine, Precipitated (AVP) are capable of generating a protective immune response but are hampered by shortcomings that make their widespread use undesirable or infeasible. Efforts to gain US Food and Drug Administration (FDA) approval for licensure Cilengitide price of a second generation recombinant protective

antigen (rPA)-based anthrax vaccine are ongoing. However, this vaccine’s reliance on the generation of a humoral immune response against a single virulence factor has led a number of scientists to conclude that the vaccine is likely not the final solution to optimal anthrax vaccine design. Other vaccine approaches, which seek a more comprehensive immune response targeted at multiple components of the B. anthracis organism, are under active investigation. This review seeks to summarize work that has been done to build on the current PA-based vaccine methodology and to evaluate the search for future anthrax prophylaxis strategies. Published by Elsevier

Ltd.”
“A series of novel imperatorin derivatives were synthesized from commercially available xanthotoxin. The in vitro pharmacological evaluation indicated that all of the compounds possessed potent vasodilatory activity. Among them, compounds (5b), (5d) and (5e) exhibited higher vasdilatory

activity (with EC(50) values of 0.68 mu M, 0.59 mu M and 0.49 mu M, respectively) than imperatorin (EC(50) = 1.12 mu M). The program Volsurf was used to Screening Library in vitro predict the derivatives’ ADME-relevant descriptors. The results suggested that these novel compounds had a potential interest for the development of novel and potent vasorelaxant agents.”
“P>Cellular folates function as co-enzymes in one-carbon metabolism and are predominantly decorated with a polyglutamate tail that enhances co-enzyme affinity, subcellular compartmentation and stability. Polyglutamylation is catalysed by folylpolyglutamate synthetases (FPGSs) that are specified by three genes in Arabidopsis, selleck FPGS1, 2 and 3, which reportedly encode plastidic, mitochondrial and cytosolic isoforms, respectively. A mutational approach was used to probe the functional importance of folate polyglutamylation in one-carbon metabolism and development. Biochemical analysis of single FPGS loss-of-function mutants established that folate polyglutamylation is essential for organellar and whole-plant folate homeostasis. However, polyglutamylated folates were still detectable, albeit at lower levels, in organelles isolated from the corresponding isozyme knockout lines, e.g. in plastids and mitochondria of the fpgs1 (plastidial) and fpgs2 (mitochondrial) mutants. This result is surprising given the purported single-compartment targeting of each FPGS isozyme.

A case-control

A case-control MG-132 study was undertaken at the Infertility Department of Zekai Tahir Burak Women’s Health Care Education and Research Hospital. The single nucleotide polymorphisms, -460 C/T and +405 C/G, in the 5′-untranslated region of the VEGF gene were tested in 98 affected women and 94 women with no laparoscopic evidence of disease. Endometriosis was also confirmed histologically. Following genomic extraction of genomic DNA, genotyping of the -460 C/T and +405 C/G polymorphisms of the VEGF gene were performed by polymerase chain reaction and restriction fragment length polymorphism assay. Nominal data were evaluated by Pearson Chi-square

or Fisher’s Exact test, where applicable. Odds ratios and 95% confidence intervals were also calculated. A P value less than 0.05 was considered statistically significant.

Demographic data were similar among groups. The genotype and allele frequencies of the -460 C/T polymorphism did not differ significantly between cases and controls. In contrast, the genotype (P < 0.001) and allele frequencies (P < 0.001) of +405 C/G polymorphism showed a significant difference between cases and controls. Regardless of the early or advanced stage, women with endometriosis showed a higher incidence

of the +405 GC genotype and +405G allele when compared with the controls.

These data suggest that VEGF +405 GC genotype and +405G allele may be associated with the risk of developing early and advanced stage endometriosis in the Turkish population.”
“Two-age (deferment or leave tree) harvesting is used increasingly in even-aged forest management, but long-term MK-4827 purchase responses of breeding avifauna to retention of residual canopy trees have not been investigated. Breeding bird surveys completed in 1994-1996 in two-age and clearcut harvests in the central Appalachian Mountains of West Virginia, USA allowed us to document long-term changes in these stands. In 2005 and 2006, we conducted point counts in mature unharvested forest stands and in 19-26 year-old clearcut and two-age harvests from the original study and in younger clearcut and two-age stands (6-10 years old). We

Vorinostat mouse found differences in breeding bird metrics among these five treatments and temporal differences in the original stands. Although early-successional species are typically absent from group selection cuts, they were almost as common in young two-age stands as clearcuts, supporting two-age harvests as an alternative to clearcutting. Although older harvests had lower species richness and diversity, they were beginning to provide habitat for some species of late-successional forest songbirds that were absent or uncommon in young harvests. overall, late-successional forest-interior species were more flexible in their use of different seral stages; several species used both age classes and harvest types in addition to mature forest, which may reflect the lack of edges in our heavily-forested landscape.

A 64 LightSpeed (R)

volume computed tomography (VCT) mult

A 64 LightSpeed (R)

volume computed tomography (VCT) multidetector-row computed tomography was used, allowing maximal intensity projection, maximal projection rendering imaging and three-dimensional (3D) rendering of images. VA reconstruction was performed by applying check details volume-rendered thresholds and spatial rendering to generate endoluminal views.

Results: Multiplanar reformations (MPRs) detected 46 abnormalities in 39 patients: inadequate apposition of the proximal rim of a stent-graft (n = 21), abnormalities of the stent-graft itself (n = 11), aortic aneurysm (n = 6), residual intimal tears (n = 5) and secondary dissection (n = 3). VA provided additional information in 76% of cases (35/46) and was more contributive after endovascular repair than after

open repair (group A: 54% (7/14), group B: 75% (9/12), group C: 95% (19/20)). VA improved localisation of abnormalities with respect to supra-aortic vessels, VX-680 research buy measured inadequate stent-graft apposition in relation to the aortic wall and precisely analysed kinking or inadequate apposition of overlapping stent grafts. VA diagnosed three additional abnormalities: two false aneurysms and one retrograde dissection developed on a suture line.

Conclusions: VA conceptualises planar images by 3D reconstruction. It provides additional information in comparison with conventional CT scans by allowing precise localisation of abnormalities with respect to the aortic wall itself and supra-aortic vessels. Furthermore,

it facilitates analysis of abnormalities in case of overlapping stent grafts. (C) 2010 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.”
“During the past few years, robotic surgical systems have been rapidly developed. The progress and advantages of these systems include three-dimensional vision and enhanced ergonomics. Kinase Inhibitor Library screening These advantages have helped a new generation of minimally invasive surgery to evolve. The da Vinci Surgical System seems to greatly resolve problems (e.g., wide exposure and retraction of peritoneal organs) that are confronted by traditional laparoscopic surgeries for retroperitoneal tumors that are near great vessels. There have been few reported cases concerning laparoscopic excision of retroperitoneal tumors situated between the inferior vena cava, the right renal vessel, and the kidney. We report the use of a robotic surgical system for this type of treatment. A 54-year-old female patient had a hypoechoic lesion near the inferior vena cava and superior to the right renal vessels. It was incidentally found by ultrasound during a health check-up examination. The computed tomography (CT) scan revealed a heterogeneous contrast-enhanced retroperitoneal mass approximately 4.4 cm medial to the right kidney with the inferior vena cava slightly deviated to the left.

The aim of this study was to investigate the prevalence and sever

The aim of this study was to investigate the prevalence and severity of dry mouth among elderly population of Korea and to evaluate associate factors and their impact.

Study Design. Telephone interviews were conducted on a stratified random sample of 1,012 subjects aged >= 55 years. Prevalence of dry mouth symptoms, severity of overall oral dryness, and associated factors were assessed using a structured questionnaire.

Results. Among the subjects, 70.1% reported to have at least one dry mouth-related TH-302 nmr symptom and 25.8% were classified with considerable dry mouth. Overall oral dryness severity of each of these groups was 4.30 +/- 2.67 and 6.09 +/- 2.25, respectively,

on a 0-10 scale. Odds ratio of dry mouth increased in women, in smokers, and with increased age and number of medications taken. Women and number of medications taken were significantly associated with overall oral dryness severity.

Conclusion. A major portion of the Korean elderly reported various dry mouth symptoms, and a wide range of severity and discomfort was caused by these symptoms. (Oral Surg Oral Med Oral Pathol Oral Radiol

Endod 2010;110:475-483)”
“The effect of homogeneous and constant external electric fields on the structural stability of chignolin, a typical β-Nicotinamide inhibitor beta-hairpin peptide, has been studied for 10ns using molecular dynamics simulations. The peptide aligns quickly its total dipole moment with the external electric field and then a constant stress is applied on its charged residues. For weaker fields this has mixed effects on the creation, destruction or strength of hydrogen bonds, but ultimately for strong fields chignolin unfolds starting by the separation of the terminal residues.

Since the function of proteins is critically linked to their three-dimensional structures, these findings indicate that exposure to external electric fields may induce changes in conformation that can potentially initiate severe cellular dysfunction. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3585867]“
“Background: Patients receiving implantable cardioverter-defibrillators (ICDs) often have severely impaired left ventricular function and a poor prognosis. Having an ICD in situ effectively denies them the possibility of a quick, arrhythmic death. It is still unclear if GSK690693 order and when the end of life and device deactivation should be discussed with patients and how much patients want to know prior to ICD implantation.

Methods: Patients with an active ICD for chronic heart failure were interviewed regarding their attitude toward the ICD, their recollection of the consent procedure, and how they felt the end of life should be discussed with ICD patients (n = 54). Patients who had received ICD therapies (n = 25) were reviewed as a subgroup with extended questions regarding attitudes toward device deactivation.

Results: Fifty-four patients were recruited. Most patients were not aware that the ICD could be deactivated.

Tissues were stained by hematoxylin and

Tissues were stained by hematoxylin and Pinometostat datasheet eosin (HE) for histopathology and Masson’s trichrome for collagen. Vascular endothelial growth factor (VEGF), fibroblast growth factors 2 (bFGF) and caspase-3 were detected by immunohistochemical analysis. Expression of mRNAs for interleukin (IL)-1 beta, tumor necrosis factor-alpha (TNF-alpha), VEGF, KDR, bFGF and FGFR1 was determined by real-time reverse transcription PCR.

Results: Stage III and IV chronic PUs stained had increased inflammatory cell infiltration and decreased collagen compared with controls. Levels

of mRNAs for inflammatory cytokines IL-1 beta and TNF-alpha were elevated in PUs compared with acute wounds and normal skin. VEGF and bFGF, together with their receptors KDR and FGFR1, respectively, were significantly decreased compared with controls. However, the expression

levels of caspase-3 were elevated in the PUs.

Conclusion: Our series of studies have shown that chronic Vorinostat concentration PUs displayed high levels of inflammation and disruption of the collagen matrix, along with increased indications of apoptosis and decreased levels of growth factors and their receptors. These characteristics can be used to comprehensively evaluate the etiology and treatment of chronic PUs.”
“Background: Metformin, an oral biguanide traditionally used for the treatment of type 2 diabetes, is widely used for the management of polycystic ovary

syndrome (PCOS)-related anovulation. Because of the significant prevalence of insulin resistance and glucose intolerance in PCOS patients, and their PI3K inhibitor putative role in ovulatory dysfunction, the use of metformin was touted as a means to improve ovulatory function and reproductive outcomes in PCOS patients. To date, there has been inconsistent evidence to demonstrate a favorable effect of metformin on oocyte quality and competence in women with PCOS. Given the heterogeneous nature of this disorder, we hypothesized that metformin may be beneficial in mice with aberrant metabolic characteristics similar to a significant number of PCOS patients. The aim of this study was to gain insight into the in vitro and in vivo effects of metformin on oocyte development and ovulatory function.

Methods: We utilized metformin treatment in the transgenic ob/ob and db/db mutant murine models which demonstrate metabolic and reproductive characteristics similar to women with PCOS. Results: Metformin did not improve in vitro oocyte maturation nor did it have an appreciable effect on in vitro granulosa cell luteinization (progesterone production) in any genotype studied. Although both mutant strains have evidence of hyperandrogenemia, anovulation, and hyperinsulinemia, only db/db mice treated with metformin had a greater number of mature oocytes and total overall oocytes compared to control.

Other methods that may be beneficial are fascia

Other methods that may be beneficial are fascia this website preserving dissection, pedicled omental flap and microsurgery; however sartorius transposition has not been shown to reduce the rate of complications. Randomized controlled trials are needed to prove the benefits of various technical modifications. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.”
“A simple nanofabrication process is introduced to tune the exchange bias in the magnetic nanostructures with a feature size below 15 nm. The IrMn/CoFe films are deposited on the porous alumina oxide

(AAO) with different pore diameters from 10 to 48 nm, keeping the center-to-center distance almost the same at 60 nm, which is fabricated on Si wafers. A large enhancement in the exchange field H(ex) (2.3 times) and the coercivity H(c) (8 times) is observed in the nanostructure compared to the continuous film. The

exchange Selleck RG-7388 field is decreased with increasing pore diameter; on the other hand Hc increases continuously with increase in pore diameter. However, the values of H(ex) and H(c) for all the exchange bias nanostructures are larger than those of the continuous film. These effects are mainly ascribed to the creation of domain walls or domains due to the pinning effect and the physical limitations that the pore size and edge-to-edge distance impose on both ferromagnetic and antiferromagnetic layers. Our results strongly support that exchange bias can be tuned by the AAO pores. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3072825]“
“Objective: MK-8931 To perform a systematic review of the literature regarding the epidemiology of the association between systemic lupus erythematosus (SLE) and atherosclerotic cardiovascular disease (CVD), including the increased risk for CVD, as well as the risk factors responsible for development of CVD in patients with SLE.

Methods: We followed the PRISMA guidelines to systematically search the PubMed database from inception to June 2012. Studies

were selected using predefined eligibility criteria, and 2 authors independently extracted data. The risk of bias was measured for each study using a domain-based assessment.

Results: We report on 28 studies that met criteria for inclusion in our analysis. We found strong epidemiologic evidence that SLE patients have an increased relative risk of CVD compared to controls. There is limited information regarding relative CVD mortality risks among SLE patients. Traditional CVD risk factors, including age, male sex, hyperlipidemia, smoking, hypertension, and CRP, are associated with CVD risk among SLE patients. Several SLE-specific factors, including disease activity and duration, and possibly specific manifestations and therapies, further increase risk. Several risk factors, such as disease activity and glucocorticoid use, are closely associated, making it difficult to disentangle their effects.