1、 公司概况
北京瑞恒比邻教育科技有限公司成立于2010年12月,注册资本为110万元,为一家提供互联网教育产品和服务的教育科技公司。
公司的核心品牌为“学通数学”,核心业务是:提供面向中小学生的数学、奥数的视频、直播课程产品和服务。目前,公司已累积有超过3年的视频课程制作经验,以及1年半的在线互动直播服务经验,并和多个在线教育平台、渠道展开了合作。
公司的全职员工共10人,其中,2人毕业于清华大学,3人有7年或以上的教育培训行业经验,9人在比邻公司工作超过2年,7人为数学教师。
2、 公司文化
学通数学的核心使命为:提供学生认可的在线学习服务。
3、 公司主要产品
视频课程:小学数学同步课,奥数专题课、同步课,初中数学同步课、备考专题课等;
直播课程:小学数学、奥数、初中数学的同步课、公开课、答疑课等。
4、 重要合作伙伴
学通数学已经积极和多个开放平台、渠道展开了合作,以期双赢。
目前,主要的合作伙伴包括:全通教育、新东方在线、义方教育、传课、淘宝同学、网易云课堂、好课网、233网校等。
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文章来源: 学通
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The trial achieved its primary endpoint by showing a significant PFS benefit among the first 375 randomized patients. Although more studies are needed to evaluate the effect of technology-based adherence interventions, current trials suggest combinations of in-person communication WITH automated reminders or triggers are more effective. Various validity tests are performed on a rating scale to ensure that the scale assesses the appropriate aspects of the illness (content validity), the correlation with diagnoses or clinical change (criterion-related validity), and the extent to which the scale measures symptom traits in contrast to a specific symptom (construct validity). lipothin.ofloxacin.valocordin Cabozantinib-related toxicities were similar to other approved VEGF-pathway inhibitors, and included fatigue, diarrhea, nausea, proteinuria, decreased appetite, palmar-plantar erythrodysesthesia, and vomiting. Unfortunately, that projected upside has not been observed clinically. fungal.omeprazol.atorvastatin A 69-year-old gentleman presents with bleeding from the upper gastrointestinal tract. For extended-interval therapy, Cmax,ss values of 20 to 30 mg/L (20 to 30 mcg/mL; 42-63 Ојmol/L) and Cmin,ss values less than 1 mg/L (1 mcg/mL; 2 Ојmol/L) generally are accepted as appropriate for gram-negative pneumonia patients. The three primary treatment options for patients with end-stage renal disease (ESRD) are hemodialysis (HD), peritoneal dialysis (PD), and kidney transplantation. levothroid.cimal.metronidazol GH insufficiency is an acquired condition that can result from hypothalamic or pituitary tumors (or their neurosurgical treatment), cranial irradiation, head trauma, pituitary infarction, and various types of CNS infections. Although symptomatic cardiac valve abnormalities have not been observed with cabergoline when administered in doses used for the treatment of prolactinomas, some clinicians have recommended routine echocardiography for patients receiving long-term cabergoline treatment for prolactinomas. nortriptyline.atarax.verapamil Lesions may be categorized as macules (Fig. Interestingly, approximately one-third of the subjects showed no change in renal function from their baseline value, and a small number showed an increased clearance. lovir.danazol.lynoral Once estimates of CL and VD are available, doses are calculated easily. A single-arm, open-label phase I trial evaluated the safety and tolerability of cabozantinib in patients with clear cell mRCC.(0) 回复 (0)
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The patient must not have had previous exposure to cytotoxic chemotherapy or intensive radiation. The results of this study were similar, with improvements in PFS and objective response rates but no difference in OS. Adverse effects include injection-site pain, GI complaints such as nausea and diarrhea, and flu-like symptoms. proscar.rocaltrol.detrol Contact between the target and effector cells is necessary. Computed tomography is a cross-sectional anatomic imaging procedure. There are currently 6.6 million stroke survivors in the United States, and stroke is the leading cause of adult disability. carbozyne.urispas.retin A quality-of-life analysis identified a significant advantage for azacitidine therapy compared with supportive care alone, including improvements in physical functioning, fatigue, dyspnea, psychosocial distress, and affect. Clinical studies suggest that achieving a free-fraction (unbound) area-under-the-curve to MIC ratio (fAUC/MIC) of greater than or equal to 211 or AUC/MIC (total) of greater than 400 improved outcomes of patients with S. aldactone.lariam.himcolin The excessive eGFR-derived doses were also correlated with major bleeding episodes (odds ratio 1.57 <>5% CI 1.35-1.84]). When considering the role of vaccination in the prevention of pertussis, there is often confusion between Tdap (tetanus toxoid, reduced diphtheria toxoid, and acellular pertussis) and DTaP (diphtheria and tetanus toxoids and acellular pertussis) vaccines. trental.keppra.xatral The result can best be expressed as the provocative concentration needed to cause a 20% fall in FEV1 (PC20). In the developing world antimalarial drugs can be purchased, but they may be counterfeit, subject to resistance, or of substandard quality. amaryl.flixotide.actonel These antibody-based tests detect P. It uses a delivery system that creates premeasured doses which disintegrate in the mouth with a small volume of liquid.(0) 回复 (0)
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Patients with atopic dermatitis often have multiple food sensitivities and allergies, resulting in hives and skin rashes and/or systemic manifestations. Serum iron concentrations greater than 500 mcg/dL (90 Ојmol/L) have been associated with severe toxicity, whereas concentrations less than 350 mcg/dL (62.7 Ојmol/L) typically are not associated with severe toxicity; however, exceptions have been reported for both thresholds. https://bvmweststellingwerf.nl/stmap_syu6145.html?binozyt.trimox.levora Some patients exhibit clinical signs of GH deficiency, subnormal growth velocity, and delayed bone age despite GH levels that are within normal limits after provocative testing. It is therefore important that accepted terms associated with celiac disease be used, and understood when engaging in patient consultations or discussions with other healthcare providers. https://bvmweststellingwerf.nl/stmap_syu686.html?novonorm.postinor.seropram Most adverse effects are seen early in the course of therapy and tend to decrease with continued treatment. Febrile neutropenia and other infectious complications have been reported with azacitidine and decitabine. The plasma protein binding of many drugs, including phenobarbital, salicylates, and phenytoin, is significantly less in the neonate than in adults. https://bvmweststellingwerf.nl/stmap_syu664.html?fusidic.augmentin.nebivolol Use of convalescent plasma did not significantly improve survival in the 84 treated patients, but was found to be safe. A number of extemporaneous formulations for oral, IV, and rectal administration are included in a compilation of products for use in pediatric patients. https://bvmweststellingwerf.nl/stmap_syu6217.html?zaditor.tenoretic.suprax Pasireotide (Signifor LAR) for the treatment of acromegaly is commercially available in the United States in the form of a monthly intramuscular injection. Travel, whether short or long, exposes the traveler to both physical and mental stress. https://bvmweststellingwerf.nl/stmap_syu6117.html?levetiracetam.risperidone.dicyclomine Because many insecticides are dissolved in a hydrocarbon vehicle, there is an additional risk of pulmonary aspiration of the hydrocarbon leading to pneumonitis when ingested. Patients with SPMI have an overall lower prevalence of modifiable risk factors.(0) 回复 (0)
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An example of this approach is given in the following case. The effect that changes in Q, fb, and CLint have on Css,u and therefore on the pharmacologic response of a drug depends on whether a high- or low-clearance drug is involved. ketorolaco.fosinopril.vibra Flexible sigmoidoscopy has virtually replaced rigid sigmoidoscopy because of increased patient comfort and superior performance. The major role of the WBC is to defend the body against invading organisms such as bacteria, viruses, and fungi. cozaar.famciclovir.fulvicin These tests are mainly used in research, but they can be used in practice. The 2013 enhanced National CLAS Standards (Culturally and Linguistically Appropriate Services) provide a framework for health and healthcare organizations to promote health equity and quality for diverse populations. pole.dulcolax.ultracet However, the rate of metabolism is more rapid with phenobarbital and phenytoin than with theophylline, perhaps because of the involvement of different cytochrome P450 (CYP) isozymes. A delay in patients presenting after exposure allows for further spread of a contagious agent, like plague, Ebola, and measles. diane.ranitidine.evecare The reactions are severe and often life-threatening and once developed, aspirin hypersensitivity remains throughout life. Ambulatory electrocardiography (AECG), so-called Holter monitoring, can be used to detect, document, and characterize cardiac rhythm or ECG abnormalities during ordinary daily activities. In these circumstances, it is best to keep the encounter brief and interview the patient in the presence of another healthcare provider. sarafem.oxybutynin.neobrufen Variable lesions are subclassified into variable intrathoracic and variable extrathoracic. The exact mechanism of the renal response to protein is unknown, but may be related to extrarenal factors such as glucagon, prostaglandins, and angiotensin II, or intrarenal mechanisms, such as alterations in tubular transport and tubuloglomerular feedback.(0) 回复 (0)
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The transmembrane domain forms a chloride channel, while the nucleotide binding domain acts as a gate to regulate chloride transport across the cell membrane. Still others may believe that health is a result of good luck or reward for good behavior. For the chapter in the Wells Handbook, please go to Chapter 76. rhinocort.imipramine.zyloprim Urine flow rate and physicochemical characteristics of the molecule influence these processes: highly ionized compounds are not reabsorbed unless pH changes within the urine increase the fraction unionized, so that reabsorption may be facilitated. However, most patients are asymptomatic, and the diagnosis of cholelithiasis usually is made following an ultrasonographic study that is not prompted by patient symptoms. With cellular phones, tablets, computers, and other devices such as "smart" thermostats, watches, and medical sensors becoming smaller, faster, and cheaper, their use and adoption has also increased. feldene.seroxat.tadalis In a retrospective analysis, 14.6% of women had cough compared with 6.0% of the men on ACE inhibitors. A capsule is attached to the distal esophagus by a delivery system. The advantages of this model are that the concentration scale is compressed on concentration–effect plots for experiments where wide concentration ranges were used, and the concentration values are transformed so that linear regression can be used to compute model parameters. zyprexa.alphagan.triderm Irritant effects may be considerably enhanced by occlusion. Use of abbreviated CLcr measurements (less than 24 h) may be valuable for detecting early evidence of AKI in critically ill patients. eldepryl.alba.omeprazol While cutaneous anthrax is the most common manifestation of naturally occurring anthrax only 1 to 2 cases have historically been reported in the United States each year. The current challenge of these approaches will be to translate fluorescent signals into quantitative in vivo measurements of GFR. desyrel.cetirizine.nizoral For patients with life-threatening SJS/TEN, supportive measures such as maintenance of adequate blood pressure and fluid and electrolyte balance, use of broad-spectrum antibiotics and vancomycin for secondary infections, and IV immunoglobulin (IVIG) may all be appropriate. When drug serum concentrations are obtained in patients for the purpose of assessing efficacy or toxicity, it is important that they be measured in the postdistribution phase when drug in the blood is in equilibrium with drug at the site of action.(0) 回复 (0)
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In subjects with normal renal function, this tends to counterbalance the effect of the contribution of tubular secretion of creatinine, which increases urine creatinine by nearly 10%. Toxic signs and symptoms develop most rapidly after IV injection (within minutes) or inhalation of fumes (heroin), followed by inhalation from snorting particles, powder, or solutions. http://pleasure-partyband.nl/stmap_uuwd112.html?purim.ethambutol.renagel Similar to intentional acts of bioterrorism, disease outbreaks of Ebola and Middle Eastern Respiratory Syndrome Coronavirus (MERS) are a threat to global health security, associated with social unrest or instability and major economic disruption, in addition to significant morbidity and mortality. Adjustment of digoxin doses using steady-state concentrations is accomplished using linear pharmacokinetics and dosage ratios: Dnew = Dold(Css,new/Css,old). http://pleasure-partyband.nl/stmap_uuwd4.html?purim.tamsulosin.vivitrol Thus, without a rechallenge, it is difficult to achieve a causality rating of definite with such an algorithm. This comprehension allows the clinician to devise and monitor a pharmacotherapeutic plan that will be of most benefit to the patient with neurological disorders. http://pleasure-partyband.nl/stmap_uuwd112.html?flector.kamagra.soloxine Nonalcoholic fatty liver disease is associated with all but one of the following chronic conditions? Neutropenia occurs when the bone marrow does not produce enough WBCs to fight infection. http://pleasure-partyband.nl/stmap_uuwd110.html?forzest.sucralfate.amoxil This plain-language initiative provides a number of useful tips on creating written handouts that are easy to read. In contrast to the azacitidine trial, hematopoietic growth factor support was allowed. TEE is contraindicated in patients with esophageal abnormalities, in whom passage of the transducer may be difficult or hazardous (eg, esophageal strictures, tear, tumor, or varices). http://pleasure-partyband.nl/stmap_uuwd185.html?aricept.zirconia.nimodipine In the case of clear cell RCC, when VHL is mutated or silenced, VHL is unable to bind and target HIF-1О± for degradation regardless of the oxygen presence in the environment. The National Cancer Institute provides a superb overview of the "Last Days of Life (PDQ)—Health Professional Version." Much of this information is also applicable to imminent death for patients with noncancer diagnoses.(0) 回复 (0)
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Lymphomas. Questions addressing the patient's drug use are essential (Fig. This decline may result from the improved health status of older adults or the use of alternative residential services (eg, assisted-living facilities and in-home healthcare). zumo.fusidic.cutivate NF-ОєB is activated by bacterial and viral antigens, which eventually leads to the production of proinflammatory cytokines and chemokines. A severity-of-illness scoring system known as SCORTEN has been developed to predict prognosis in patients with TEN. finpecia.oxy.detrol While the "disease or disaster of the month" is seemingly overwhelming it is important to remember that planning for public health emergent outbreaks should be generalizable and include steps or procedures that would fit most scenarios. Lindane 1% shampoo is no longer recommended. P-glycoprotein is one of the most recognized of the drug transport proteins that exhibit genetic polymorphism. nitrogesic.metoprolol.ciprofloxacin The primary reasons for malaria infection and death are failure to take chemoprophylaxis, inappropriate chemoprophylaxis, delay in seeking medical care, and misdiagnosis. Lenalidomide is currently recommended for patients with symptomatic anemia and lower-risk MDS with a 5q deletion. Beta-blockers can be used to reverse most adverse effects if they persist. sertraline.coreg.compazine Most clinicians advocate monitoring only steady-state trough concentrations of vancomycin. These pumps allow the organization to program the pump with standard concentrations and standard infusion ranges, preventing the nurse from administering it outside specified limits for each drug. sinemet.cytotec.suprax Routine use of growth factors such as recombinant human erythropoietin and granulocyte colony-stimulating factor (G-CSF) has not been shown to improve outcome and are not recommended for the management of aplastic anemia except when life threatening infections are present. Radiographic studies using barium sulfate are commonly referred to as barium esophagram (barium swallow) or barium enema studies as barium sulfate is only administered via the oral or rectal route.(0) 回复 (0)
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Antagonism is defined as a 100-fold or greater increase in viable organism count (Fig. Front line healthcare provider teams need to be vigilant to detect potential exposures or outbreaks and aggressively and appropriately initiate treatment strategies. prozac.omeprazol.leflunomide Oral bismuth subsalicylate has been used to prevent traveler's diarrhea. Other drugs that produce the lupus syndrome include isoniazid and phenytoin. olmesartan.metronidazol.phenazopyridine A single eGFR equation may not be best suited for all populations, and choice of equation has been shown to impact CKD prevalence estimates. The adverse effects of atropine and pralidoxime, which can be minimized by decreasing the dose, are predictable extensions of their anticholinergic actions and are minimally important compared with the life-threatening effects of severe anticholinesterase poisoning. fortamet.remeron.felodipine It is the second leading cause of death in Americans. The vessel is punctured with a needle, through which a flexible metal wire is advanced into the vessel's lumen, over which a sheath with a sideport extension is advanced into the vessel. A residence was the site of exposure in 93% of the cases, and a single substance was involved in 89% of cases. nasonex.methotrexate.suhagra Regardless of which tool is used, an assessment of cultural competency should be conducted periodically on an ongoing, long-term basis. ERCP is also a useful method for tissue acquisition in the pancreaticobiliary tract using a variety of brush and biopsy devices. valsartan.surpass.hydrodiuril Nausea and vomiting may occur, and antiemetic prophylaxis is recommended. Hereditary forms of these subtypes are associated with the Birt-Hogg-Dube syndrome, which is characterized by hair follicle fibrofolliculomas of the face and neck and lung cysts, in addition to RCC, in 15% to 30% of affected individuals.(0) 回复 (0)
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BW is body weight (in kilograms), age is the patient's age (in years), 0.85 is a correction factor to account for lower muscle mass in women, and Scr is serum creatinine (in milligrams per deciliter). Children will reach normalized adult values by 3 years, and ERPF will begin to decline as a function of age after 30 years, reaching about one-half of its peak value by 90 years. However, its accuracy is less reliable when PAD is present in lower extremity popliteal and tibial arteries given the smaller diameter, increased depth, and frequent calcifications of these vessels. https://fawaka.nu/stmap_6dk5217.html?anastrozole.viramune.thyroxine Conversely, studies highlight the association between increased medication adherence and fewer hospitalizations and decreased costs in patients with certain chronic medical conditions (eg, diabetes, hypertension). Most patients improve during this phase, but others progress to more severe disease. https://fawaka.nu/stmap_6dk530.html?oroken.sinutab.lopid There is no question that limited health literacy is associated with adverse health outcomes including an increased mortality rate and increased healthcare costs. Dengue is also more common in urban and suburban environments than malaria because of the type of mosquito vector. Almost all acromegalic patients will present with physical signs and symptoms of soft-tissue overgrowth. https://fawaka.nu/stmap_6dk5173.html?azole.shallaki.avandaryl In the US between 1900 and 2012 only 1,006 confirmed or probable human cases were reported. While each of the patients described above will have a unique health situation, social determinants will influence their exposure to healthy conditions and their cultural backgrounds will also shape their health beliefs and behaviors. Isoniazid is metabolized by several pathways, acetylation being the major pathway. https://fawaka.nu/stmap_6dk597.html?methylprednisolone.antiox.ventolin The model may best be used when clinicians sense discordance with the patient relating to adherence to a treatment plan or to the overall visit (see the Clinical Presentation box for an example of how to use the PEM). At times, the filariform larvae may not pass out in the feces but instead migrate to the lungs and produce progeny, a process called autoinfection. Conversion of GFR to units of mL/s/m requires multiplication of GFR expressed in milliliters per minute per 1.73 m by 0.00963.) In addition, the estimated GFR values may be lower than actual for infants and adolescents and higher for low birth weight infants less than 1 year. https://fawaka.nu/stmap_6dk5145.html?compazine.xatral.prandin The parenteral administration of deferoxamine produces an orange-red-colored urine within 3 to 6 hours because of the presence of ferrioxamine. For those patients who present with the combination of hepatocellular injury and jaundice, there is a 10% mortality rate.(0) 回复 (0)
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Fever, anxiety, anemia, hyperthyroidism, and pregnancy increase the intensity of a physiologic murmur. Penicillin skin testing in advance of need for penicillin treatment in patients with a history of penicillin allergy does not appear to induce sensitization. These spores, which can then germinate and cause disease, can be ingested or inhaled, enter the skin through abrasions, or injected into cutaneous tissue or vasculature. ocuflox.molly.arrest An overall clinical response in acromegalic patients typically occurs after 4 to 8 weeks of continuous bromocriptine therapy. Drugs or their metabolites that cause NAFLD do so by affecting fatty-acid esterification and oxidation rates within the mitochondria of the hepatocyte (see Fig. If the nonspecific Jaffe reaction is used, which overestimates the Scr by approximately 10% because of the noncreatinine chromogens, then the measurement of CLcr is a very good measure of GFR in patients with normal kidney function. urispas.omnicef.vimax Similarly, the probability of clinical and/or microbiologic infection cure can be maximized if a fluoroquinolone is chosen that achieves an AUC-to-MIC ratio of 100 to 125 or greater for Gram-negative bacteria (eg, P. As a consequence, there are "poor metabolizers" who have a defective mutant gene for the isozyme, cannot manufacture a fully functional isozyme, and therefore cannot metabolize the drug substrate very well. myambutol.portal.doxycycline Atherosclerosis, the cause of most CVD events, is typically present for decades before symptoms appear. Methyldopa is the prototype drug for this mechanism. amantadine.molly.flonase Usual drug culprits include tetracyclines, barbiturates, sulfonamides, codeine, phenolphthalein, acetaminophen, and NSAIDs. Acute disease is commonly associated with diarrhea lasting 14 days or less in duration while persistent diarrhea lasts more than 14 days. If a loading dose were deemed necessary, it would be given as the first dose (LD = <>0.8 L]<> mg/L] = 166 mg rounded to 170 mg infused over 1 hour), and the first maintenance dose would be administered 12 hours (eg, one dosage interval) later. neurax.innopran.amiloride Utilization of rapid diagnostic testing significantly reduces the time required to identifying the infecting pathogen, thus improving clinician's ability to more rapidly diagnose and treat infections. The appropriateness and degree of eye contact varies significantly among cultures, and before poor eye contact is interpreted, the patient's cultural background should be considered. Drugs that can produce nonimmune DHR include vancomycin, opiates, iodinated radiocontrast agents, angiotensin-converting enzyme (ACE) inhibitors, amphotericin B, and D-tubocurarine.(0) 回复 (0)