Another interesting feature is that the asymptotic values for the

Another interesting feature is that the asymptotic values for the cumulative probability of coastal Linsitinib solubility dmso hits P¯≈limn→∞P¯(n) and particle age A¯≈limn→∞A¯(n) show very limited dependence on the resolution of the underlying hydrodynamic models. In particular, they proved to be very close to each other for the 1 nm and 0.5 nm models (Table 2). This feature shows that in some sense the 1 nm model reproduces the statistical properties of current-driven transport in the Gulf of Finland quite well. This

result is not completely unexpected but is nevertheless interesting. A probable reason is that the averaging procedure of short-term transport features (but over time intervals exceeding the typical turnover time of mesoscale eddies) over the 5-year time interval filters out many short-term features of the circulation. This filtering apparently affects the results of simulations that satisfactorily capture the mesoscale features to an almost equal extent. Therefore, it is likely that many aspects of potential risks to ship traffic and/or other offshore activities in the Gulf of Finland, calculated Trametinib ic50 at a 0.5 nm (or finer) resolution, will have almost the same values as those obtained using results based

on a resolution of 1 nm. This feature also suggests that many aspects of the mean circulation of the Gulf of Finland (Andrejev et al. 2004a), including those reflecting the combined effects of the prevailing south-westerly winds, the general structure of the density field, the bottom topography and the coastal shape of the gulf can be adequately calculated using a hydrodynamic model with a horizontal resolution of 1 nm. The further example with fairway locations, Rebamipide however, indicates that

the impact of the model resolution (and corresponding changes in the accuracy of the representation of both bathymetry and details of current patterns) becomes clearly evident in attempts to construct practical tools for decision-making about the optimum positioning of potentially dangerous activities and/or fairways. Further research is obviously necessary in order to create adequate quantification measures of the potential gain accruing from using the optimum fairway and to understand the robustness of this gain with respect to variations of such an optimum. The key development in this light is the understanding that hydrodynamic models with a relatively low resolution (but at least eddy-permitting) may be effectively used to make the basic check whether or not any gain (in terms of a decrease in environmental risks) is possible from the smart positioning of dangerous activities in a particular sea region. This means in practice that the computing time for exercises of this type can be reduced considerably. Further, the acceptable match of optimum fairways for the 1 nm and 0.

Ice cover in the northern Baltic proper

Ice cover in the northern Baltic proper buy AZD8055 lasts from 20 to 30 days and normally begins to break up in mid-March (Granskog et al. 2006); prolonged periods of low water are common in spring (Chen & Omstedt 2005). The southern shore of Askö is protected from north-easterly to north-westerly winds (Figure 1). The study was conducted from March to May. The water level was 4–5 cm below the mean water level (MWL) in late March and dropped to 25–27 cm below MWL in early

May. At this time the water level began to rise, and by late May, the water level was 13–14 cm above MWL. The water temperature rose from 1 °C in late March to 8 °C by late May. The maximum wind speed from the south-east, which is the sector most open to the sea, never exceeded 10 m s− 1 during the sampling period. The salinity was fairly stable over the study period

at 6.1–6.5 per mil. Ten sampling sites were chosen along the rocky shores of the south-western part of Askö Island – five wave-exposed sites and five wave-sheltered sites, all with approximately the same slope of 30° (Figure 1). Wave exposure at the sampling sites was calculated using the formula Lf = (∑ ci cos gi)/(∑ cos gi) Epacadostat purchase ( Håkansson 1981), where Lf is the maximun local fetch and ci is the distance in km to the nearest land. Lf was 0–1 at wave-sheltered sites and 45–77 at wave-exposed sites. The distance was measured in 15 directions using deviation angles (gi: ± 6, ± 12, ± 18, ± 24, ± 30, ± 36 and ± 42) from a central radius; this was set in the direction that gave the highest Lf value. Samples were collected on the hard bottom on four different occasions, in late March, mid-April, early May and late May. The first sampling period (25 and 26 March) occurred one week after the break-up of the icecover. Owing to the ice conditions on this occasion, three wave-exposed sites and three wave-sheltered sites were sampled, with four replicates at each site. In the second (15 and 19 April), third (6 and 7 May) and L-gulonolactone oxidase fourth (25 and 27 May) sampling

periods, five wave-sheltered and five wave-exposed sites were chosen, with four replicates at each site. For each wave-exposure range, the sites were selected randomly from a larger set of possible sampling sites. The samples were collected at a depth of ∼ 0.5 m below the MWL. A 0.04 m2 quadrat (0.2 × 0.2 m) was placed at random on the rocky bottom. All organisms inside the quadrat were scraped off with a putty knife into a1mmmeshbag fixedto onesideoftheframe(Malm & Isæus 2005). All the samples were stored frozen (− 18 °C) until sorting, when they were sorted to the nearest possible taxa by one single person. The samples were dried to constant weight at 60 °C, and the biomass of both algae and fauna, expressed in g, was measured accurate to three decimal points. Gammarus and Idotea specimens smaller than 4 mm were identified as juvenile Gammarus spp. and Idotea spp.

After this, patients qualifying for a surgical esophageal myotomy

After this, patients qualifying for a surgical esophageal myotomy were recruited for an institutional review board–approved phase one feasibility clinical trial in October 2010. For the initial period of the study (first 16 consecutive patients), the senior surgeon performed all the steps of the procedure assisted by another senior surgeon. The trainees in that period check details did not perform any significant portions of the cases. Two new advanced GI surgical fellows joined the team in July 2011 for a 1-year fellowship. They had both completed Accreditation Council for Graduate Medical Education–approved surgical residencies. As part of their residency training,

they had both performed an average of 100 upper and lower endoscopic

procedures as required by the ABS. Most of these procedures were SGI-1776 ic50 diagnostic in nature. They had no experience in POEM before starting the fellowship. At this point as well, the senior surgeon was considered to be over his technical learning curve because procedure times had plateaued. After starting their fellowships in July, the fellows were involved in all consecutive procedures during the year (cases 17-40). An education plan was drawn up at the start of their fellowships to allow for a phased-in supervised performance of POEM. This plan included didactics on preoperative esophageal testing and hands-on experience performing POEM on 4 porcine explants and one cadaver in the laboratory. In the initial part of their fellowships, they also received intensive clinical training in ESD, EMR, clipping, endoscopic suturing, and so fourth. During this initial period, both fellows started by observing the senior surgeon performing POEM in the operating room. Once the senior surgeon was comfortable with the fellows’ basic technical competence, knowledge of the steps of the procedure,

and recognition of anatomy, the fellows began performing phased-in portions of the procedure: first overtube placement, landmark identification, and mucosal lift; then tunnel creation; then mucosotomy cAMP and endoscope insertion; then clip closure of the mucosotomy; and finally the myotomy itself. The degree of fellow involvement in the transition period was determined by the senior surgeon such that performance metrics (LOP, mucosotomies) were not allowed to deteriorate. Once the fellows overcame their learning curve for this procedure they were able to perform POEM with minimal active participation on the part of the senior surgeon. This was reached in the last 16 consecutive patients in our cohort of 40 patients. Patient preparation and the surgical technique have been described previously.9 Briefly, the technique as described by Inoue et al10 was used for all cases. All surgeries were performed in the operating suite with the patient supine and under general anesthesia.

The different dependencies observed for BASP1 ( Fig 6) convincin

The different dependencies observed for BASP1 ( Fig. 6) convincingly illustrate the potential of the methodology

to probe differential side-chain dynamics in IDPs. In future applications it is planned to extend the methodology to higher frequency dimensions exploiting non-uniform sampling techniques. Details of the sequence and results will be reported elsewhere (manuscript in preparation). IDPs are involved in fundamental biological (physiological) processes and are, therefore, of great interest to medical and pharmaceutical RG7422 in vitro research [40]. Their inherent structural flexibility allows them to accommodate different binding partners exploiting different binding modes (e.g. folding-upon binding or formation of fuzzy complexes). Despite limitations due to their unfolded nature several successful studies have been reported demonstrating that IDPs are indeed amenable to drug development programs [41]. However, the dynamic nature of IDPs impairs the application of conventional structure-based drug design strategies. The lack of 3D structures as bottleneck in the pharmaceutical industry is widely recognized and was recently addressed by a combination of information-rich

buy Buparlisib NMR and new protein sequence analysis tools (e.g. meta-structure) [34] and [42]. It was already demonstrated that the meta-structure analysis provides valid starting points for ligand development by revealing information about the construction of suitable fragment libraries and ligand binding modes [42]. Given the fact that only primary sequence information is needed, valuable applications also to ligand

identification for IDPs can be anticipated. A prototypical application to IDPs is given with the example of Osteopontin (OPN), an extracellular matrix protein associated with metastasis of several kinds of cancer. The meta-structure analysis revealed a similarity to the (folded) protein MRIP antithrombin. The naturally occurring, highly sulfated glycosaminoglycan heparin is an established ligand for antithrombin. Heparin binding to OPN was verified using NMR spectroscopy [37]. It was shown that heparin binding to OPN causes significant and specific chemical shift changes. This example illustrates how the combined usage of meta-structure and NMR data can be used to create valid starting points for drug development programs involving IDPs. In subsequent steps NMR spectroscopy can be used to provide additional information about binding modes and orientations of bound ligands [42]. Naturally, a comprehensive analysis has to address both structural and dynamical changes. In a recent NMR analysis we have employed both PRE and 15N NMR relaxation data to analyze the interaction between the IDP Osteopontin (OPN) and heparin (manuscript in preparation). Fig. 7 shows differential PREs and 15N relaxation parameters (15N-T2 and 1HN–15N NOE).

Chen et al showed that elevated [CO2] significantly increased ro

Chen et al. showed that elevated [CO2] significantly increased root biomass during the whole growth season [12]. We studied numerical models of root volume and adventitious root dry weight, but simulation models

for root number and total length have not been reported [46]. This study used a modified logistic equation to simulate effects on rice ARN and ARL under FACE treatment. The results also showed that there was a good correlation between simulated and observed values. R2 values varied from Selleck Nivolumab 0.952 to 0.983, reaching significant level. RRMSE ranged from 0.051 to 0.132, indicating that results were reliable. Limited by the conditions of the experiments, two factors were involved in this model: CO2 concentration and N rate. Because the results depend mainly on statistical models, the mechanism by which FACE affects rice roots is unclear and

awaits further investigation. This work was funded by the National Natural Science Foundation of China (No. 30270777), the Key Direction Research of Knowledge Innovation in Chinese Academy of Science (No. KZCX3-SW-440) and the Priority Academic Program Doxorubicin Development of Jiangsu Higher Education Institutions. The main instruments and apparatus of the FACE system were supplied by Japan National Institute for Agro-Environmental Sciences (NIAES) and Japan Agricultural Research Center for Tohoku Region (NARCT). “
“Maize (Zea mays L.) is the largest crop in China, and is grown throughout the country from the spring maize belt in northeastern region to the southwestern mountain spring maize belt. In 2012, maize was planted on 3.50 million hectares and the total production of corn was 206 million tons, accounting for 31.9% and 35.7% of the total areas and production

of the cereal crops, respectively (http://data.stats.gov.cn/workspace/index; jsessionid). The average yield of maize was 5.7 tha–1. Since 2000, the growing area, total production and the average yield of maize have increased by 51.9%, 94.0%, and 27.7%, respectively. However, the occurrence of various foliar diseases has become a serious yield limiting factor in most maize producing regions Inositol monophosphatase 1 throughout the country. Northern corn leaf blight (NCLB), caused by Setosphaeria turcica (Luttrell) Leonard et Suggs, anamorph: Exserohilum turcicum (Pass.) Leonard et Suggs is one of the most harmful diseases in the spring corn regions. In the late 1980s, use of the inbred line Mo 17 originating from the USA, which carries gene Ht for resistance to NCLB, effectively controlled this disease. Recently, the outbreak of NCLB has resulted in severe yield losses in northeastern and northern China. Owing to cultivation of resistant hybrids, the shift of E. turcicum race 0 in the 1980s to race 1 in the 1990s and the occurrence of other races have resulted in severe economic losses [1], [2] and [3]. Southern corn leaf blight (SCLB) Cochliobolus heterostrophus (Drechs.) Drechs.

Regarding the 2 FITs, stage 0–I CRC

Regarding the 2 FITs, stage 0–I CRC R428 purchase accounted for 47.5% and 46.1% of screen-detected cancers for OC-Sensor and HM-Jack, respectively; this difference was not significant (P = .67). With regard to interval cancer, no significant differences (P = .62) in the distributions of cancer stage were observed between the 2 tests. For both tests, the test sensitivities

for stage 0–I and stage II–IV CRCs were estimated to be 62% (95% CI, 60%–64%) and 91% (95% CI, 90%–92%), respectively. Regarding the location of CRC in the overall population, the proportions of proximally located CRC were 23.4%, 27.2%, and 23.8% for non–screen-detected cancer, screen-detected cancer, and interval cancer, respectively. Regarding the 2 FITs and the location of screen-detected cancer, a slightly higher percentage of proximally located CRC was observed for OC-Sensor as compared with HM-Jack (28.1% vs 23.4%; P = .06). Concerning the 2 FITs and the location of interval

cancer, a significantly higher percentage of proximally located interval cancers was observed for HM-Jack as compared with OC-Sensor (31% vs 22%; P = .044). Additionally, test sensitivities were estimated according to proximal and distal CRC. BIRB 796 price For OC-Sensor, the test sensitivities were 81% (95% CI, 72%–90%) and 81% (95% CI, 76%–85%) for proximal and distal CRC, respectively (P = .99), and for HM-Jack, the test sensitivities were 56% (95% CI, 44%–71%) and 79% (95% CI, 70%–90%), respectively (P = .006). When the 2 FITs were compared, a significant difference in the test sensitivity between the 2 tests was observed for proximal cancer (P = .003), but not for distal cancer (P = .69). In the present study, a single quantitative threshold for FIT, even when calculated as the mass of feces collected in relation to the buffer volume, was not found to function identically across products for detection of CRC. In addition, the specific epitopes of hemoglobin detected by different tests are likely to have contributed substantially to test performance. Although important differences in

short-term indicators were identified, no significant difference in subsequent CRC mortality Montelukast Sodium was observed between the 2 quantitative FITs mostly commonly used in Taiwan. Features and findings of population-based screening studies based on quantitative FITs are summarized in Supplementary Table 6.18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 and 31 Among different brands of FIT, manufacturer cutoff concentrations range from 8 to 176 ng hemoglobin/mL buffer; however, after transformation to the proposed standardized unit, this range narrows to 15–67 μg hemoglobin/g feces. This transformation supports, in part, the use of the proposed standardized unit because the cutoff concentration of FITs is usually designed to fit the screening capacity of endoscopists, a capacity that is globally constrained.

The recent annotation of basal metazoan genomes [11, 18, 19 and 2

The recent annotation of basal metazoan genomes [11, 18, 19 and 20] has revealed part lists of important neural modules that allow step-wise tracking of their evolutionary emergence. In this exercise, the modules of the chemical synapse are of particular interest as they allow tracking the origin of bona fide neurons, defined by their capacity to signal to individual target cells via synapses (Figure 1a). Surprisingly, multiple Ceritinib nmr genes encoding proteins of the highly complex postsynaptic density have recently been traced back to the choanoflagellate-metazoan ancestor [10]. As synapses are obviously absent in choanoflagellates (and in sponges and placozoans), these data

indicate that, in early metazoans, this module must have served another function, before it became part of the synapse. Intriguingly, other studies suggest that the postsynaptic module indeed first acted as a ‘chemosensory module’ [21, 22, 23 and 24]: Initially sensing environmental cues (such as the amino acid glutamate indicating

prey) the partaking receptors and ion channels may have started to receive internal information (such as the transmitter glutamate) from within the newly evolving synapse. Figure 2 illustrates how the postsynapse might have evolved from the chemosensory module [24]. In this scenario, the resulting sensory cell and neuron represent sister cell types; the different usage of chemosensory apparatus and postsynapse

represents PI3K Inhibitor Library datasheet a divergence of function; and the specialization on sensory versus integrative functions is a division of labour event. Corroborating this scenario, ionotropic glutamate receptor families existed Flucloronide before the divergence of animals and plants and metabotropic glutamate (and GABA) receptors predate the metazoan radiation [11 and 12•] (Figure 1a); and, notably, both families are known to comprise chemosensors for external glutamate [25, 26 and 27]. If, as these studies suggest, the postsynaptic module evolved from an ancient chemosensory module, when did this happen? The key step here seems to be the emergence of Neuroligin (Nlgn), the ligand mediating the ‘handshake’ between pre- and postsynaptic neurons on the post-synaptic side. Nlgn has not been found in basal metazoans that lack neurons such as sponges [ 18 and 28] and the placozoan Trichoplax [ 10 and 11], while it is present in the sea anemone Nematostella that possesses neurons [ 10 and 28]. However, to illustrate a caveat of presence/absence analyses, Nlgn has not been found in the freshwater polyp Hydra, which possesses neurons [ 10]. As Hydra belongs to the cnidarians, this absence is necessarily due to secondary loss or strong modification (or the gene simply has not been found yet). The same might be true for the comb jelly Mnemiopsis that likewise possesses neurons with highly characteristic synapses [ 29] but apparently misses Nlgn.

The hot plate was pre-heated and kept at a temperature of 55±0 5 

The hot plate was pre-heated and kept at a temperature of 55±0.5 °C. All rats were acclimated to the hot plate for 5 min, 24 h prior to testing, as, again, the novelty of the apparatus itself can induce antinociception (Netto et al., 2004). Rats were placed in glass funnels on the heated surface and the nociceptive Selleckchem BIBW2992 threshold was assessed recording to the time taken to first response (foot licking, jumping, or rapidly removing paws), as described by Minami et al. (1994). Response was recorded in seconds (s) and a cutoff time of

20 s was used. After 11 weeks of chronic stress exposure, the rats of SN were subjected to a 20-min session of anodal tDCS every afternoon for 8 days. This period was established because tDCS has been shown to modify cortical excitability for up to 1 h after one session of stimulation (Nitsche and Paulus, 2000; Nitsche et al., 2003b). However, repetitive tDCS application has demonstrated better and longer-lasting effects on pain relief, and in recent study our group showed antihyperalgesic response in paw inflamed rats with this treatment period (Laste et al., 2012). The direct current was delivered from a battery-driven, http://www.selleckchem.com/products/17-AAG(Geldanamycin).html constant current stimulator using ECG electrodes with conductive adhesive hydrogel. Rats’ heads were shaved for better adherence and the electrodes were trimmed to 1.5 cm2 for better fit. After placement, electrodes were fixed onto the head with adhesive tape (Micropore™)

and covered with a protective mesh to prevent removal (Fig. 5A). The anodal electrode was positioned between the ears, from the neck of the rat (parietal cortex) (Fig. 5B) (Takano et al., 2011 with modifications), so as to mimic anodal placement in human pain studies (Mendonca et al., 2011 and Dasilva

et al., 2012). The cathodal electrode was positioned at the midpoint of the lateral angle of the eyes (supraorbital area). The electrodes were placed on the skin in a similar manner to that used in human studies of tDCS for pain (Nitsche et al., 2008, Antal and Paulus, 2011, Rosen et al., 2009 and Fregni et al., 2006c). A constant current of 0.5 mA intensity was applied for 20 min (Fregni et al., Proteasome inhibitor 2006b, Dockery et al., 2011, Wachter et al., 2011 and Liebetanz et al., 2006). According to an earlier study (Liebetanz et al., 2009), a constant current of 1 mA intensity causes skin lesions, as current density is comparatively much higher than the traditional 1 mA tDCS using large pads in humans. We therefore chose to use 0.5 mA, an intensity that has also been used in other animal studies. In addition, in our study, electrodes were fixed onto the skin. We did not observe any lesions with montage and current intensity. An important point to consider was that this model required neither anesthesia nor surgery, unlike models used in the previous tDCS studies in rats (Dockery et al., 2011, Wachter et al., 2011 and Liebetanz et al., 2006).

In the following, a review of articular cartilage cryopreservatio

In the following, a review of articular cartilage cryopreservation methods for transplantation is presented. First, the milestones of cartilage cryopreservation research are reviewed in chronological order, and the basics of associated injuries in classical cryopreservation methods for cartilage are discussed. Then, the prospect of vitrification in lieu of classical cryopreservation, and the current status of cartilage Palbociclib price cryopreservation are reviewed. At the end, a summary of challenges are presented and viable approaches are discussed. Successful cryopreservation

of articular cartilage is difficult to achieve due to general cryopreservation challenges and some cartilage-specific challenges. Tissues are more challenging to cryopreserve than cellular systems in suspension for many reasons. In tissues, both the cellular activity and the matrix structure must be preserved and this is complicated by the intimate relationship of the cells with the extracellular matrix. Tissues generally contain multiple cell types each with different cryopreservation parameters. Furthermore, different tissues have different requirements for transplantation. In some tissues, such as skin or bone grafts, transplantation

of the extracellular matrix is preferred without the native cells to decrease the risk of immunorejection in the recipient [12] and [42]. Alternatively, some tissues such as articular Nutlin-3a order cartilage require the cellular system for proper long-term functioning of the extracellular matrix; therefore, the cryopreservation strategy must be able to minimize the

damage to both the extracellular matrix selleck chemicals and the cells. The earliest investigation into the preservation of chondrocytes was done by Curran and Gibson (1956) [22] who investigated the radioactive sulfate uptake of chondroitin sulfate in human chondrocytes as a measure of chondrocyte viability in 0.5 mm thick cartilage slices obtained from rib, ear or nose. They demonstrated that the cartilage can stay viable for up to 40 days in Tyrode solution at 4 °C. However, cartilage slices, untreated or pretreated (with 10% to 30% w/w glycerol solutions), cooled down to −25 °C showed no recovery of the chondrocytes. Heyner (1960) [40] trypsinized the cartilage for 25 min before slow and rapid freezing in 15% glycerol solutions. It appeared that the chondrocytes in trypsinized cartilage could survive slow freezing to −79 °C and grow in culture while the chondrocytes in untrypsinized cartilage could not tolerate freezing temperatures lower than −20 °C. It was concluded that the failure of the chondrocytes to survive freeze–thaw protocols was related to the cartilage matrix and cell-matrix interactions. Subsequent research was performed on isolated chondrocytes to determine their ability to survive freeze–thaw protocols before spending more effort on the chondrocytes in situ.

Each volume consisted of 15 ∗ 6 mm thick slices with

an i

Each volume consisted of 15 ∗ 6 mm thick slices with

an inter-slice gap of 1 mm; FOV: 20 ∗ 20 cm; size of acquisition matrix, 64 ∗ 64; NEX: 1.00. The parameter values of the anatomical scans were TR = 7.284 ms, TE = 2.892 ms, FA = 11 degrees, bandwidth = 31.25 kHz, and voxel size = 1 mm isotropic. Following the settings used by Mitchell et al., we used oblique slices in the sagittal view with a tilt of −20 to −30 degrees such that the most inferior slice was above the eyes (anteriorly) and passed through the cerebellum (posteriorly). The fMRI pre-processing was performed with SPM8 (Welcome Department of Imaging Neuroscience, UK). Corrected for motion was applied to the images, followed by co-registration of functional and anatomical images, segmentation to identify grey matter, and normalisation into standard Montreal signaling pathway Neurological Institute (MNI) BI 2536 order spaces at a re-sliced voxel size of 3 × 3 × 6 mm. The unsmoothed data were analysed with the Searchlight method. The computation for the Searchlight was made using PyMVPA2.0,

a Python package intended to run machine-learning programs applied to human neurological data. Searchlight yielded an accuracy map for classification of the stimulus language in each trial (Korean or Chinese script) with the voxels with higher accuracy indicating small local regions that are more informative. In our study, the method was applied to the entire brain, over spherical regions of radius 3. The machine-learning classifier from used with Searchlight was a logistic regression with L2-norm regularisation (also termed ridge regression or Tikhonov regularisation). Consecutively, the z-statistic of the accuracy for each voxel was computed and screened out with a threshold of 3.08, corresponding to a p-value of 0.001 under the hypothesis of normal distribution. Participant-based images were visualised using the xjView toolbox (http://www.alivelearn.net/xjview) to produce sensitivity maps analogous to statistical maps

of a GLM. xjView toolbox was also used for extracting clusters of informative voxels in which the discrimination accuracy was high. For the GLM analysis (Friston et al., 1994 and Friston et al., 1995) the data were additionally smoothed using an 8 mm Gaussian kernel. A conventional General Linear Model contrastive analysis was performed for each individual participant. The group-averaged effects were computed using a fixed-effects model. For the group analysis, those clusters of 4 or more that were above a threshold of p < 0.05 FWE (at both the cluster-level and peak-level) were considered to be significant. This work was supported by a grant from Kaken, Japan Society for the Promotion of Science (JSPS), Kiban (C)-23500171.